HTTP ERROR 500

Problem accessing /schlagwort.html. Reason:

    An unknown error occurred: null

Caused by:

javax.servlet.ServletException: An unknown error occurred: null
	at org.exist.http.servlets.EXistServlet.doPost(EXistServlet.java:473)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:229)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:103)
	at org.exist.http.urlrewrite.Forward.doRewrite(Forward.java:50)
	at org.exist.http.urlrewrite.XQueryURLRewrite.doRewrite(XQueryURLRewrite.java:567)
	at org.exist.http.urlrewrite.XQueryURLRewrite.applyViews(XQueryURLRewrite.java:416)
	at org.exist.http.urlrewrite.XQueryURLRewrite.service(XQueryURLRewrite.java:362)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:533)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
	at org.eclipse.jetty.server.Server.handle(Server.java:368)
	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:488)
	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:932)
	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:994)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
	at org.eclipse.jetty.io.nio.SslConnection.handle(SslConnection.java:196)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
	at org.exist.xquery.value.ValueSequence.add(ValueSequence.java:143)
	at org.exist.xquery.Predicate.evalBoolean(Predicate.java:407)
	at org.exist.xquery.Predicate.evalPredicate(Predicate.java:332)
	at org.exist.xquery.FilteredExpression.processPredicate(FilteredExpression.java:150)
	at org.exist.xquery.FilteredExpression.eval(FilteredExpression.java:140)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:142)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.value.FunctionReference.eval(FunctionReference.java:80)
	at org.exist.xquery.DynamicFunctionCall.eval(DynamicFunctionCall.java:75)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.SwitchExpression.eval(SwitchExpression.java:104)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DynamicCardinalityCheck.eval(DynamicCardinalityCheck.java:74)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:214)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.value.FunctionReference.eval(FunctionReference.java:80)
	at org.exist.xquery.DynamicFunctionCall.eval(DynamicFunctionCall.java:75)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.SwitchExpression.eval(SwitchExpression.java:104)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DynamicCardinalityCheck.eval(DynamicCardinalityCheck.java:74)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:214)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:193)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.value.FunctionReference.eval(FunctionReference.java:80)
	at org.exist.xquery.DynamicFunctionCall.eval(DynamicFunctionCall.java:75)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.SwitchExpression.eval(SwitchExpression.java:104)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DynamicCardinalityCheck.eval(DynamicCardinalityCheck.java:74)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:214)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.XQuery.execute(XQuery.java:297)
	at org.exist.xquery.XQuery.execute(XQuery.java:217)
	at org.exist.http.RESTServer.executeXQuery(RESTServer.java:1533)
	at org.exist.http.RESTServer.doPost(RESTServer.java:672)
	at org.exist.http.servlets.EXistServlet.doPost(EXistServlet.java:445)
	... 44 more

Caused by:

java.lang.NullPointerException
	at org.exist.xquery.value.ValueSequence.add(ValueSequence.java:143)
	at org.exist.xquery.Predicate.evalBoolean(Predicate.java:407)
	at org.exist.xquery.Predicate.evalPredicate(Predicate.java:332)
	at org.exist.xquery.FilteredExpression.processPredicate(FilteredExpression.java:150)
	at org.exist.xquery.FilteredExpression.eval(FilteredExpression.java:140)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:142)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.value.FunctionReference.eval(FunctionReference.java:80)
	at org.exist.xquery.DynamicFunctionCall.eval(DynamicFunctionCall.java:75)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.SwitchExpression.eval(SwitchExpression.java:104)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DynamicCardinalityCheck.eval(DynamicCardinalityCheck.java:74)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:214)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:84)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.EnclosedExpr.eval(EnclosedExpr.java:80)
	at org.exist.xquery.ElementConstructor.eval(ElementConstructor.java:311)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.value.FunctionReference.eval(FunctionReference.java:80)
	at org.exist.xquery.DynamicFunctionCall.eval(DynamicFunctionCall.java:75)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.SwitchExpression.eval(SwitchExpression.java:104)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DynamicCardinalityCheck.eval(DynamicCardinalityCheck.java:74)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:214)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:193)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.value.FunctionReference.eval(FunctionReference.java:80)
	at org.exist.xquery.DynamicFunctionCall.eval(DynamicFunctionCall.java:75)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.SwitchExpression.eval(SwitchExpression.java:104)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DynamicCardinalityCheck.eval(DynamicCardinalityCheck.java:74)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:214)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.ConditionalExpression.eval(ConditionalExpression.java:100)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall$DeferredFunctionCallImpl.execute(FunctionCall.java:420)
	at org.exist.xquery.DeferredFunctionCall.realize(DeferredFunctionCall.java:56)
	at org.exist.xquery.DeferredFunctionCall.iterate(DeferredFunctionCall.java:229)
	at org.exist.xquery.value.ValueSequence.addAll(ValueSequence.java:166)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:308)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.TypeswitchExpression.eval(TypeswitchExpression.java:102)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.ForExpr.eval(ForExpr.java:307)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.UserDefinedFunction.eval(UserDefinedFunction.java:155)
	at org.exist.xquery.FunctionCall.evalFunction(FunctionCall.java:328)
	at org.exist.xquery.FunctionCall.eval(FunctionCall.java:232)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58)
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:189)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.LetExpr.eval(LetExpr.java:187)
	at org.exist.xquery.BindingExpression.eval(BindingExpression.java:164)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.PathExpr.eval(PathExpr.java:264)
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71)
	at org.exist.xquery.XQuery.execute(XQuery.java:297)
	at org.exist.xquery.XQuery.execute(XQuery.java:217)
	at org.exist.http.RESTServer.executeXQuery(RESTServer.java:1533)
	at org.exist.http.RESTServer.doPost(RESTServer.java:672)
	at org.exist.http.servlets.EXistServlet.doPost(EXistServlet.java:445)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:229)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:103)
	at org.exist.http.urlrewrite.Forward.doRewrite(Forward.java:50)
	at org.exist.http.urlrewrite.XQueryURLRewrite.doRewrite(XQueryURLRewrite.java:567)
	at org.exist.http.urlrewrite.XQueryURLRewrite.applyViews(XQueryURLRewrite.java:416)
	at org.exist.http.urlrewrite.XQueryURLRewrite.service(XQueryURLRewrite.java:362)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:533)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
	at org.eclipse.jetty.server.Server.handle(Server.java:368)
	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:488)
	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:932)
	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:994)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
	at org.eclipse.jetty.io.nio.SslConnection.handle(SslConnection.java:196)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
	at java.lang.Thread.run(Thread.java:745)

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