org.apache.cocoon.ProcessingException: Failed to process pipeline
	at [TransformerException] - file:/D:/Dev/Ametys/templates/web/master/webapp/cms/../../../../../plugins/inlinemedia/master/main/plugin-inlinemedia/pages/services/youtubegallery/youtubegallery_1.4.xsl:29:86
	at <map:serialize type="xhtml"> - file:/D:/Dev/Ametys/templates/web/master/webapp/cms/../../../../../plugins/inlinemedia/master/main/plugin-inlinemedia/sitemap.xmap:28:34
	at <map:transform type="i18n"> - file:/D:/Dev/Ametys/templates/web/master/webapp/cms/../../../../../plugins/inlinemedia/master/main/plugin-inlinemedia/sitemap.xmap:24:32
	at <map:transform> - file:/D:/Dev/Ametys/templates/web/master/webapp/cms/../../../../../plugins/inlinemedia/master/main/plugin-inlinemedia/sitemap.xmap:23:43
	at <map:generate type="action-result"> - file:/D:/Dev/Ametys/templates/web/master/webapp/cms/../../../../../plugins/inlinemedia/master/main/plugin-inlinemedia/sitemap.xmap:22:41
	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:782)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:414)
	at org.apache.cocoon.components.source.SourceUtil.toSAX(SourceUtil.java:101)
	at org.apache.cocoon.components.source.SourceUtil.toSAX(SourceUtil.java:181)
	at org.apache.cocoon.components.source.SourceUtil.toSAX(SourceUtil.java:140)
	at org.ametys.web.repository.PageGenerator._saxSource(PageGenerator.java:723)
	at org.ametys.web.repository.PageGenerator._saxZoneItem(PageGenerator.java:520)
	at org.ametys.web.repository.PageGenerator._saxZoneItems(PageGenerator.java:396)
	at org.ametys.web.repository.PageGenerator._saxZone(PageGenerator.java:323)
	at org.ametys.web.repository.PageGenerator.generate(PageGenerator.java:244)
	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:782)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:414)
	at org.apache.cocoon.components.source.SourceUtil.toSAX(SourceUtil.java:101)
	at org.apache.cocoon.components.source.SourceUtil.parse(SourceUtil.java:321)
	at org.apache.cocoon.sitemap.ContentAggregator.generate(ContentAggregator.java:125)
	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: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.ametys.runtime.servlet.RuntimeServlet.service(RuntimeServlet.java:543)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2463)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2452)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.commons.lang.exception.NestableRuntimeException: javax.xml.transform.TransformerException: org.apache.xpath.objects.XString cannot be cast to org.apache.xpath.objects.XNodeSet
	at org.apache.cocoon.transformation.TraxTransformer.endDocument(TraxTransformer.java:604)
	at org.ametys.core.cocoon.ActionResultGenerator.generate(ActionResultGenerator.java:56)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:581)
	... 64 more