rg.sakaiproject.portal.api.PortalHandlerException:
org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of interface
org.apache.wicket.markup.html.form.IFormSubmitListener targeted at component
[MarkupContainer [Component id = form]] threw an exception
at
org.sakaiproject.portal.charon.handlers.ToolHandler.doPost(ToolHandler.java:73)
caused by: org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of
interface org.apache.wicket.markup.html.form.IFormSubmitListener targeted at
component [MarkupContainer [Component id = form]] threw an exception
at
org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget.processEvents(ListenerInterfaceRequestTarget.java:73)
caused by: java.lang.reflect.InvocationTargetException
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
caused by: java.lang.IllegalStateException: Attempt to set model object on null
model of component: form:sitesI can not extract the selected value.
