javax.faces.FacesException: Exception while calling encodeEnd on component : {Component-Path : [Clas

JSFプロジェクトの実行中に次のエラーメッセージが表示されます.

javax.faces.FacesException: Exception while calling encodeEnd on component : {Component-Path : [Class: org.ajax4jsf.component.AjaxViewRoot,ViewId: /sysReport/showStu.jsp][Class: javax.faces.component.html.HtmlPanelGrid,Id: j_id_jsp_3570473_1]}
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:626)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:261)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:257)
	at org.apache.myfaces.application.jsp.JspViewHandlerImpl.actuallyRenderView(JspViewHandlerImpl.java:427)
	at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:383)
	at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
	at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
	at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
	at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:390)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.sinosoft.common.filters.UserAccessLogFilter.doFilter(UserAccessLogFilter.java:69)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.sinosoft.common.filters.EncodingSetFilter.doFilter(EncodingSetFilter.java:36)
	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:228)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
	at java.lang.Thread.run(Unknown Source)
Caused by: javax.faces.FacesException: Exception while calling encodeEnd on component : {Component-Path : [Class: org.ajax4jsf.component.AjaxViewRoot,ViewId: /sysReport/showStu.jsp][Class: javax.faces.component.html.HtmlPanelGrid,Id: j_id_jsp_3570473_1][Class: org.ajax4jsf.component.html.AjaxForm,Id: form1][Class: javax.faces.component.html.HtmlPanelGroup,Id: j_id_jsp_3570473_3]}
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:626)
	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:522)
	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:499)
	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:520)
	at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:231)
	at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:102)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:623)
	... 36 more
Caused by: javax.faces.FacesException: Exception while calling encodeEnd on component : {Component-Path : [Class: org.ajax4jsf.component.AjaxViewRoot,ViewId: /sysReport/showStu.jsp][Class: javax.faces.component.html.HtmlPanelGrid,Id: j_id_jsp_3570473_1][Class: org.ajax4jsf.component.html.AjaxForm,Id: form1][Class: javax.faces.component.html.HtmlPanelGroup,Id: j_id_jsp_3570473_3][Class: javax.faces.component.html.HtmlSelectOneMenu,Id: polistatus]}
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:626)
	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:522)
	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:499)
	at org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:92)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:623)
	... 42 more
Caused by: java.lang.IllegalArgumentException: Value binding '#{student.poliStaList}'of UISelectItems with component-path {Component-Path : [Class: org.ajax4jsf.component.AjaxViewRoot,ViewId: /sysReport/showStu.jsp][Class: javax.faces.component.html.HtmlPanelGrid,Id: j_id_jsp_3570473_1][Class: org.ajax4jsf.component.html.AjaxForm,Id: form1][Class: javax.faces.component.html.HtmlPanelGroup,Id: j_id_jsp_3570473_3][Class: javax.faces.component.html.HtmlSelectOneMenu,Id: polistatus][Class: javax.faces.component.UISelectItems,Id: j_id_jsp_3570473_7]} does not reference an Object of type SelectItem, SelectItem[], Collection or Map but of type : null
	at org.apache.myfaces.shared_impl.util.SelectItemsIterator.hasNext(SelectItemsIterator.java:167)
	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.internalGetSelectItemList(RendererUtils.java:557)
	at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getSelectItemList(RendererUtils.java:533)
	at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.internalRenderSelect(HtmlRendererUtils.java:314)
	at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderMenu(HtmlRendererUtils.java:288)
	at org.apache.myfaces.shared_impl.renderkit.html.HtmlMenuRendererBase.encodeEnd(HtmlMenuRendererBase.java:57)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:623)
	... 46 more
[Sinosoft] 2014-01-13 15:09:30 930 WARN [http-8080-1] org.apache.myfaces.renderkit.html.util.ReducedHTMLParser.parse(566) | Invalid tag found: unexpected input while looking for attr name or '/>' at line 125

この問題の原因はbeanです.xmlには構成情報がありませんbean.xmlでは、次の情報を構成します.

<managed-bean> 
    <description></description>
   	<managed-bean-name>student</managed-bean-name>
   	<managed-bean-class>com.sinosoft.wwl.StudentQuery</managed-bean-class>
   	<managed-bean-scope>session</managed-bean-scope>
   </managed-bean>