NPE in feedback panel
---------------------
Key: WICKET-1780
URL: https://issues.apache.org/jira/browse/WICKET-1780
Project: Wicket
Issue Type: Bug
Affects Versions: 1.3.4
Reporter: Martijn Dashorst
Fix For: 1.3.5, 1.4-M4
WicketMessage: Error attaching this container for rendering: [MarkupContainer
[Component id = feedbackul, page =
nl.topicus.tripleapoc.web.pages.deelnemer.intake.IntakeStap1Personalia, path =
11:layLeft:feedback:feedbackul.FeedbackPanel$2, isVisible = true, isVersioned =
false]]
Root cause:
java.lang.NullPointerException
at
org.apache.wicket.markup.html.panel.FeedbackPanel.newMessageDisplayComponent(FeedbackPanel.java:324)
at
org.apache.wicket.markup.html.panel.FeedbackPanel$MessageListView.populateItem(FeedbackPanel.java:88)
at
org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:573)
at
org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:127)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1003)
at org.apache.wicket.Component.beforeRender(Component.java:1035)
at
org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1589)
at org.apache.wicket.Component.onBeforeRender(Component.java:3684)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1003)
at org.apache.wicket.Component.beforeRender(Component.java:1035)
at
org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1589)
at org.apache.wicket.Component.onBeforeRender(Component.java:3684)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1003)
at org.apache.wicket.Component.prepareForRender(Component.java:2168)
at
org.apache.wicket.ajax.AjaxRequestTarget.respondComponent(AjaxRequestTarget.java:747)
at
org.apache.wicket.ajax.AjaxRequestTarget.respondComponents(AjaxRequestTarget.java:649)
at
org.apache.wicket.ajax.AjaxRequestTarget.respond(AjaxRequestTarget.java:564)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:104)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1177)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1248)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1349)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:493)
at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:387)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:199)
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