After upgrade to 7.4.5. we have sometimes a nullpointer in 7.4.5. - Webclient.
It is not easy to reproduce because it is not always happening.
I think it has something to do with loading the table-view (webclient scroll mode) after detail-view. The table-view is in a tabpanel.
After the error the user is reloading the page. But then the behaviour is different. Sorting on the column is not working etc.
Switching to another program in the menu also with tableview it is working normal again.
The error is pasted below. Any ideas?
2015-11-04 10:58:53,080 ERROR [http-8445-11] org.apache.wicket.RequestCycle - Exception in rendering component: [MarkupContainer [Component id = 66]] [0F9E01D6-D910-49E2-AEBA-AD167AFFF014 MutaService]
org.apache.wicket.WicketRuntimeException: Exception in rendering component: [MarkupContainer [Component id = 66]]
at org.apache.wicket.Component.renderComponent(Component.java:2764)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1559)
at org.apache.wicket.Component.render(Component.java:2525)
at org.apache.wicket.Component.renderComponent(Component.java:2666)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView$ScrollBehavior.renderComponent(WebCellBasedView.java:5776)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView$ScrollBehavior.renderRows(WebCellBasedView.java:5723)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView$ScrollBehavior.scrollViewPort(WebCellBasedView.java:5500)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView.scrollViewPort(WebCellBasedView.java:5303)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView.onBeforeRender(WebCellBasedView.java:3080)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.Component.prepareForRender(Component.java:2297)
at org.apache.wicket.Component.prepareForRender(Component.java:2329)
at org.apache.wicket.ajax.AjaxRequestTarget.respondComponent(AjaxRequestTarget.java:853)
at org.apache.wicket.ajax.AjaxRequestTarget.respondComponents(AjaxRequestTarget.java:680)
at org.apache.wicket.ajax.AjaxRequestTarget.respond(AjaxRequestTarget.java:590)
at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
at com.servoy.j2db.server.headlessclient.WebClientsApplication$8.respond(WebClientsApplication.java:717)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1287)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1358)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1465)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
at com.servoy.j2db.server.servlets.Zt.doGet(Zt.java:1)
at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:138)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:620)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
2015-11-04 10:58:53,080 ERROR [http-8445-11] com.servoy.j2db.util.Debug - Error rendering the page svy_nav_fr_main [0F9E01D6-D910-49E2-AEBA-AD167AFFF014 MutaService]
org.apache.wicket.WicketRuntimeException: Exception in rendering component: [MarkupContainer [Component id = 66]]
at org.apache.wicket.Component.renderComponent(Component.java:2764)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1559)
at org.apache.wicket.Component.render(Component.java:2525)
at org.apache.wicket.Component.renderComponent(Component.java:2666)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView$ScrollBehavior.renderComponent(WebCellBasedView.java:5776)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView$ScrollBehavior.renderRows(WebCellBasedView.java:5723)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView$ScrollBehavior.scrollViewPort(WebCellBasedView.java:5500)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView.scrollViewPort(WebCellBasedView.java:5303)
at com.servoy.j2db.server.headlessclient.dataui.WebCellBasedView.onBeforeRender(WebCellBasedView.java:3080)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.Component.prepareForRender(Component.java:2297)
at org.apache.wicket.Component.prepareForRender(Component.java:2329)
at org.apache.wicket.ajax.AjaxRequestTarget.respondComponent(AjaxRequestTarget.java:853)
at org.apache.wicket.ajax.AjaxRequestTarget.respondComponents(AjaxRequestTarget.java:680)
at org.apache.wicket.ajax.AjaxRequestTarget.respond(AjaxRequestTarget.java:590)
at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
at com.servoy.j2db.server.headlessclient.WebClientsApplication$8.respond(WebClientsApplication.java:717)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1287)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1358)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1465)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
at com.servoy.j2db.server.servlets.Zt.doGet(Zt.java:1)
at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:138)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:620)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
