ERROR - RequestCycle               - Error attaching this container for rendering: [MarkupContainer [Component id = poiList]]
org.apache.wicket.WicketRuntimeException: Error attaching this container for rendering: [MarkupContainer [Component id = poiList]]
    at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1739)
    at org.apache.wicket.Component.onBeforeRender(Component.java:3855)
    at ecgroup.web.panels.PoiListPanel.onBeforeRender(PoiListPanel.java:50001)
    at org.apache.wicket.Component.internalBeforeRender(Component.java:1061)
    at org.apache.wicket.Component.beforeRender(Component.java:1095)
    at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1727)
    at org.apache.wicket.Component.onBeforeRender(Component.java:3855)
    at org.apache.wicket.Page.onBeforeRender(Page.java:1521)
    at ecgroup.web.pages.RecommenderPage.onBeforeRender(RecommenderPage.java:50001)
    at org.apache.wicket.Component.internalBeforeRender(Component.java:1061)
    at org.apache.wicket.Component.beforeRender(Component.java:1095)
    at org.apache.wicket.Component.prepareForRender(Component.java:2225)
    at org.apache.wicket.Component.prepareForRender(Component.java:2262)
    at org.apache.wicket.Page.renderPage(Page.java:893)
    at org.apache.wicket.protocol.http.WebRequestCycle.redirectTo(WebRequestCycle.java:167)
    at org.apache.wicket.request.target.component.PageRequestTarget.respond(PageRequestTarget.java:58)
    at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
    at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1258)
    at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329)
    at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428)
    at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
    at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479)
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:312)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.wideplay.warp.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:61)
    at com.wideplay.warp.hibernate.SessionPerRequestFilter.doFilter(SessionPerRequestFilter.java:53)
    at com.wideplay.warp.servlet.FilterDefinition.doFilter(FilterDefinition.java:98)
    at com.wideplay.warp.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:52)
    at com.wideplay.warp.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:50)
    at com.wideplay.warp.servlet.WebFilter.doFilter(WebFilter.java:83)
    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:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    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:849)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given