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https://issues.apache.org/jira/browse/WICKET-1780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn Dashorst closed WICKET-1780.
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> 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
> Assignee: 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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