An error has occured

net.sf.saxon.trans.XPathException: A sequence of more than one item is not allowed as the third argument of fn:concat() (<date>, <date>)
http://gams.uni-graz.at/kofler/kofler-tei.xsl - -1:-1

Cocoon stacktrace[hide]

Java stacktrace[hide]

; SystemID: http://gams.uni-graz.at/kofler/kofler-tei.xsl; Line#: -1; Column#: -1
net.sf.saxon.trans.XPathException: A sequence of more than one item is not allowed as the third argument of fn:concat() (<date>, <date>) 
	at net.sf.saxon.expr.Expression.typeError(Expression.java:1469)
	at net.sf.saxon.expr.SingletonAtomizer.evaluateItem(SingletonAtomizer.java:221)
	at net.sf.saxon.expr.SingletonAtomizer.evaluateItem(SingletonAtomizer.java:31)
	at net.sf.saxon.functions.Concat$1.evaluateAsString(Concat.java:92)
	at net.sf.saxon.functions.Concat$1.evaluateItem(Concat.java:102)
	at net.sf.saxon.expr.instruct.ValueOf.evaluateItem(ValueOf.java:320)
	at net.sf.saxon.expr.instruct.ValueOf.evaluateItem(ValueOf.java:44)
	at net.sf.saxon.expr.instruct.SimpleNodeConstructor.iterate(SimpleNodeConstructor.java:288)
	at net.sf.saxon.expr.instruct.Choose.iterate(Choose.java:969)
	at net.sf.saxon.expr.instruct.BlockIterator.next(BlockIterator.java:49)
	at net.sf.saxon.tree.iter.AdjacentTextNodeMergingIterator.<init>(AdjacentTextNodeMergingIterator.java:34)
	at net.sf.saxon.expr.AdjacentTextNodeMerger.iterate(AdjacentTextNodeMerger.java:229)
	at net.sf.saxon.expr.Atomizer.iterate(Atomizer.java:351)
	at net.sf.saxon.expr.AtomicSequenceConverter.iterate(AtomicSequenceConverter.java:297)
	at net.sf.saxon.expr.parser.Evaluator$7.evaluate(Evaluator.java:239)
	at net.sf.saxon.expr.SystemFunctionCall.evaluateArguments(SystemFunctionCall.java:446)
	at net.sf.saxon.expr.FunctionCall.iterate(FunctionCall.java:530)
	at net.sf.saxon.expr.Expression.evaluateItem(Expression.java:851)
	at net.sf.saxon.expr.Expression.evaluateAsString(Expression.java:916)
	at net.sf.saxon.expr.instruct.SimpleNodeConstructor.processLeavingTail(SimpleNodeConstructor.java:218)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Choose.processLeavingTail(Choose.java:896)
	at net.sf.saxon.expr.LetExpression.processLeavingTail(LetExpression.java:723)
	at net.sf.saxon.expr.instruct.TemplateRule.applyLeavingTail(TemplateRule.java:352)
	at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:533)
	at net.sf.saxon.expr.instruct.ApplyTemplates$ApplyTemplatesPackage.processLeavingTail(ApplyTemplates.java:557)
	at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:451)
	at net.sf.saxon.expr.instruct.ApplyTemplates.apply(ApplyTemplates.java:300)
	at net.sf.saxon.expr.instruct.ApplyTemplates.process(ApplyTemplates.java:251)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.NamedTemplate.expand(NamedTemplate.java:243)
	at net.sf.saxon.expr.instruct.CallTemplate$CallTemplatePackage.processLeavingTail(CallTemplate.java:519)
	at net.sf.saxon.expr.instruct.CallTemplate.process(CallTemplate.java:355)
	at net.sf.saxon.expr.instruct.CallTemplate.processLeavingTail(CallTemplate.java:412)
	at net.sf.saxon.expr.instruct.Choose.processLeavingTail(Choose.java:896)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.TemplateRule.applyLeavingTail(TemplateRule.java:352)
	at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:533)
	at net.sf.saxon.trans.XsltController.applyTemplates(XsltController.java:746)
	at net.sf.saxon.s9api.AbstractXsltTransformer.applyTemplatesToSource(AbstractXsltTransformer.java:347)
	at net.sf.saxon.s9api.XsltTransformer.transform(XsltTransformer.java:349)
	at net.sf.saxon.jaxp.TransformerImpl.transform(TransformerImpl.java:71)
	at net.sf.saxon.jaxp.TransformerHandlerImpl.endDocument(TransformerHandlerImpl.java:173)
	at org.apache.cocoon.xml.AbstractXMLPipe.endDocument(AbstractXMLPipe.java:56)
	at org.apache.cocoon.transformation.TraxTransformer.endDocument(TraxTransformer.java:586)
	at org.apache.cocoon.xml.AbstractXMLPipe.endDocument(AbstractXMLPipe.java:56)
	at org.apache.cocoon.transformation.XIncludeTransformer$XIncludePipe.endDocument(XIncludeTransformer.java:239)
	at org.apache.cocoon.xml.AbstractXMLPipe.endDocument(AbstractXMLPipe.java:56)
	at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
	at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
	at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
	at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at org.apache.excalibur.xml.impl.JaxpParser.parse(JaxpParser.java:315)
	at org.apache.excalibur.xml.impl.JaxpParser.parse(JaxpParser.java:334)
	at org.apache.cocoon.components.source.SourceUtil.parse(SourceUtil.java:326)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:116)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:581)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:301)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:483)
	at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:144)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:103)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
	at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
	at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1162)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:750)

Java full stacktrace[hide]

org.apache.cocoon.ProcessingException: Failed to process pipeline
	at [XPathException] - http://gams.uni-graz.at/kofler/kofler-tei.xsl
	at <map:serialize type="html5"> - file:///usr/local/tomcat/webapps/cocoon/gams3/sitemap.xmap:170:37
	at <map:transform type="i18n"> - file:///usr/local/tomcat/webapps/cocoon/gams3/sitemap.xmap:146:32
	at <map:transform type="xslt-saxon"> - file:///usr/local/tomcat/webapps/cocoon/gams3/sitemap.xmap:134:34
	at <map:transform type="xinclude"> - file:///usr/local/tomcat/webapps/cocoon/gams3/sitemap.xmap:132:38
	at <map:generate> - file:///usr/local/tomcat/webapps/cocoon/gams3/sitemap.xmap:131:50
	at <map:mount> - file:///usr/local/tomcat/webapps/cocoon/sitemap.xmap:828:92
	at org.apache.cocoon.ProcessingException.throwLocated(ProcessingException.java:145)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.handleException(AbstractProcessingPipeline.java:955)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:585)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:301)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:483)
	at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:144)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:103)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
	at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
	at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1162)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:750)
Caused by: org.apache.commons.lang.exception.NestableRuntimeException: net.sf.saxon.trans.XPathException: A sequence of more than one item is not allowed as the third argument of fn:concat() (<date>, <date>) 
	at org.apache.cocoon.transformation.TraxTransformer.endDocument(TraxTransformer.java:604)
	at org.apache.cocoon.xml.AbstractXMLPipe.endDocument(AbstractXMLPipe.java:56)
	at org.apache.cocoon.transformation.XIncludeTransformer$XIncludePipe.endDocument(XIncludeTransformer.java:239)
	at org.apache.cocoon.xml.AbstractXMLPipe.endDocument(AbstractXMLPipe.java:56)
	at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
	at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
	at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
	at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at org.apache.excalibur.xml.impl.JaxpParser.parse(JaxpParser.java:315)
	at org.apache.excalibur.xml.impl.JaxpParser.parse(JaxpParser.java:334)
	at org.apache.cocoon.components.source.SourceUtil.parse(SourceUtil.java:326)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:116)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:581)
	... 49 more
Caused by: net.sf.saxon.trans.XPathException: A sequence of more than one item is not allowed as the third argument of fn:concat() (<date>, <date>) 
	at net.sf.saxon.expr.Expression.typeError(Expression.java:1469)
	at net.sf.saxon.expr.SingletonAtomizer.evaluateItem(SingletonAtomizer.java:221)
	at net.sf.saxon.expr.SingletonAtomizer.evaluateItem(SingletonAtomizer.java:31)
	at net.sf.saxon.functions.Concat$1.evaluateAsString(Concat.java:92)
	at net.sf.saxon.functions.Concat$1.evaluateItem(Concat.java:102)
	at net.sf.saxon.expr.instruct.ValueOf.evaluateItem(ValueOf.java:320)
	at net.sf.saxon.expr.instruct.ValueOf.evaluateItem(ValueOf.java:44)
	at net.sf.saxon.expr.instruct.SimpleNodeConstructor.iterate(SimpleNodeConstructor.java:288)
	at net.sf.saxon.expr.instruct.Choose.iterate(Choose.java:969)
	at net.sf.saxon.expr.instruct.BlockIterator.next(BlockIterator.java:49)
	at net.sf.saxon.tree.iter.AdjacentTextNodeMergingIterator.<init>(AdjacentTextNodeMergingIterator.java:34)
	at net.sf.saxon.expr.AdjacentTextNodeMerger.iterate(AdjacentTextNodeMerger.java:229)
	at net.sf.saxon.expr.Atomizer.iterate(Atomizer.java:351)
	at net.sf.saxon.expr.AtomicSequenceConverter.iterate(AtomicSequenceConverter.java:297)
	at net.sf.saxon.expr.parser.Evaluator$7.evaluate(Evaluator.java:239)
	at net.sf.saxon.expr.SystemFunctionCall.evaluateArguments(SystemFunctionCall.java:446)
	at net.sf.saxon.expr.FunctionCall.iterate(FunctionCall.java:530)
	at net.sf.saxon.expr.Expression.evaluateItem(Expression.java:851)
	at net.sf.saxon.expr.Expression.evaluateAsString(Expression.java:916)
	at net.sf.saxon.expr.instruct.SimpleNodeConstructor.processLeavingTail(SimpleNodeConstructor.java:218)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Choose.processLeavingTail(Choose.java:896)
	at net.sf.saxon.expr.LetExpression.processLeavingTail(LetExpression.java:723)
	at net.sf.saxon.expr.instruct.TemplateRule.applyLeavingTail(TemplateRule.java:352)
	at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:533)
	at net.sf.saxon.expr.instruct.ApplyTemplates$ApplyTemplatesPackage.processLeavingTail(ApplyTemplates.java:557)
	at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:451)
	at net.sf.saxon.expr.instruct.ApplyTemplates.apply(ApplyTemplates.java:300)
	at net.sf.saxon.expr.instruct.ApplyTemplates.process(ApplyTemplates.java:251)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.NamedTemplate.expand(NamedTemplate.java:243)
	at net.sf.saxon.expr.instruct.CallTemplate$CallTemplatePackage.processLeavingTail(CallTemplate.java:519)
	at net.sf.saxon.expr.instruct.CallTemplate.process(CallTemplate.java:355)
	at net.sf.saxon.expr.instruct.CallTemplate.processLeavingTail(CallTemplate.java:412)
	at net.sf.saxon.expr.instruct.Choose.processLeavingTail(Choose.java:896)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:735)
	at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:132)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:353)
	at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:300)
	at net.sf.saxon.expr.instruct.TemplateRule.applyLeavingTail(TemplateRule.java:352)
	at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:533)
	at net.sf.saxon.trans.XsltController.applyTemplates(XsltController.java:746)
	at net.sf.saxon.s9api.AbstractXsltTransformer.applyTemplatesToSource(AbstractXsltTransformer.java:347)
	at net.sf.saxon.s9api.XsltTransformer.transform(XsltTransformer.java:349)
	at net.sf.saxon.jaxp.TransformerImpl.transform(TransformerImpl.java:71)
	at net.sf.saxon.jaxp.TransformerHandlerImpl.endDocument(TransformerHandlerImpl.java:173)
	at org.apache.cocoon.xml.AbstractXMLPipe.endDocument(AbstractXMLPipe.java:56)
	at org.apache.cocoon.transformation.TraxTransformer.endDocument(TraxTransformer.java:586)
	... 69 more

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