How to reproduce :

• Open the resource explorer panel
  > an error ocured

  ametys:creator
  javax.jcr.PathNotFoundException: ametys:creator 
      at org.apache.jackrabbit.core.NodeImpl$8.perform(NodeImpl.java:2167) 
      at org.apache.jackrabbit.core.NodeImpl$8.perform(NodeImpl.java:2161) 
      at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216) 
      at org.apache.jackrabbit.core.ItemImpl.perform(ItemImpl.java:91) 
      at org.apache.jackrabbit.core.NodeImpl.getNode(NodeImpl.java:2161) 
      at org.ametys.plugins.explorer.resources.jcr.JCRResource.getCreator(JCRResource.java:302) 
      at org.ametys.plugins.explorer.resources.generators.ResourcesExplorerGenerator.getResourceAttributes(ResourcesExplorerGenerator.java:285) 
      at org.ametys.plugins.explorer.resources.generators.ResourcesExplorerGenerator.saxResource(ResourcesExplorerGenerator.java:273) 
      at org.ametys.plugins.explorer.resources.generators.ResourcesExplorerGenerator.saxCollection(ResourcesExplorerGenerator.java:180) 
      at org.ametys.plugins.explorer.resources.generators.ResourcesExplorerGenerator.generate(ResourcesExplorerGenerator.java:100) 
      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.source.impl.SitemapSource.getInputStream(SitemapSource.java:267) 
      at org.ametys.core.ui.dispatcher.DispatchGenerator._dispatching(DispatchGenerator.java:149) 
      at org.ametys.core.ui.dispatcher.DispatchGenerator.generate(DispatchGenerator.java:91) 
      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.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.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:542) 
      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:217) 
      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:616) 
      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:673) 
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500) 
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456) 
      at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
      at java.lang.Thread.run(Unknown Source)