java.lang.NullPointerException

Apache's JIRA Issue Tracker | Carlos Pita | 10 years ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at org.apache.wicket.ajax.form.AjaxFormChoiceComponentUpdatingBehavior.renderHead()
  2. Wicket Core
    MarkupContainer.visitChildren
    1. org.apache.wicket.ajax.form.AjaxFormChoiceComponentUpdatingBehavior.renderHead(AjaxFormChoiceComponentUpdatingBehavior.java:71)
    2. org.apache.wicket.Component.renderHead(Component.java:2266)
    3. org.apache.wicket.markup.html.internal.HtmlHeaderContainer$1.component(HtmlHeaderContainer.java:209)
    4. org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:843)
    5. org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:858)
    6. org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:883)
    6 frames