java.lang.IllegalArgumentException: Argument 'pageClass' may not be null.

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java.lang.IllegalArgumentException: Argument 'pageClass' may not be null.

vipgandhi.87
Hi Guys,

Can anyone help me with this thing???

java.lang.IllegalArgumentException: Argument 'pageClass' may not be null.
        at org.apache.wicket.util.lang.Args.notNull(Args.java:41)
        at org.apache.wicket.core.request.handler.PageProvider.setPageClass(PageProvider.java:349)
        at org.apache.wicket.core.request.handler.PageProvider.<init>(PageProvider.java:123)
        at org.apache.wicket.request.cycle.RequestCycle.setResponsePage(RequestCycle.java:673)
        at com.americasjobexchange.apputil.utils.BaseRequestCycleListener.onException(BaseRequestCycleListener.java:35)
        at org.apache.wicket.request.cycle.RequestCycleListenerCollection$4.notify(RequestCycleListenerCollection.java:126)
        at org.apache.wicket.request.cycle.RequestCycleListenerCollection$4.notify(RequestCycleListenerCollection.java:122)
        at org.apache.wicket.util.listener.ListenerCollection.notify(ListenerCollection.java:80)
        at org.apache.wicket.request.cycle.RequestCycleListenerCollection.onException(RequestCycleListenerCollection.java:121)
        at org.apache.wicket.request.cycle.RequestCycleListenerCollection$4.notify(RequestCycleListenerCollection.java:126)
        at org.apache.wicket.request.cycle.RequestCycleListenerCollection$4.notify(RequestCycleListenerCollection.java:122)
        at org.apache.wicket.util.listener.ListenerCollection.notify(ListenerCollection.java:80)
        at org.apache.wicket.request.cycle.RequestCycleListenerCollection.onException(RequestCycleListenerCollection.java:121)
        at org.apache.wicket.request.cycle.RequestCycle.handleException(RequestCycle.java:347)
        at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:229)
        at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289)
        at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)
        at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:201)
        at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:282)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.wicket.protocol.http.servlet.WicketSessionFilter.doFilter(WicketSessionFilter.java:159)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311)
        at org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter.doFilter(AbstractPreAuthenticatedProcessingFilter.java:88)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
        at org.jasig.cas.client.util.HttpServletRequestWrapperFilter.doFilter(HttpServletRequestWrapperFilter.java:62)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
        at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:196)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
        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:102)
        at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:394)
        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:859)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:662)
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Re: java.lang.IllegalArgumentException: Argument 'pageClass' may not be null.

vipgandhi.87
Hi...

I am getting the above mentioned error very frequently and i am not able to debug that why is this keep occurring???

Can anyone help????

Thanks in advance... :)