org.sakaiproject.portal.api.PortalHandlerException: org.sakaiproject.tool.api.ToolException: org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException: Argument Error: One or more parameters are null. at org.sakaiproject.portal.charon.handlers.ToolHandler.doPost(ToolHandler.java:73) caused by: org.sakaiproject.tool.api.ToolException: org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException: Argument Error: One or more parameters are null. at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1471) caused by: org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException: Argument Error: One or more parameters are null. at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:456) caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException: Argument Error: One or more parameters are null. at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:840) caused by: java.lang.NullPointerException: Argument Error: One or more parameters are null. at com.sun.faces.renderkit.html_basic.HtmlResponseWriter.writeText(HtmlResponseWriter.java:377) at com.sun.faces.renderkit.html_basic.MenuRenderer.renderOption(MenuRenderer.java:602) at com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions(MenuRenderer.java:546) at com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect(MenuRenderer.java:502) at com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:451) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:740) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:473) at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:150) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:721) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:465) at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:253) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:721) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:465) at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:253) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:721) at javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:629) at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:566) at com.sun.faces.taglib.html_basic.PanelGridTag.doEndTag(PanelGridTag.java:460) at org.apache.jsp.jsf.author.removePart_jsp._jspx_meth_h_005fpanelGrid_005f0(removePart_jsp.java:316) at org.apache.jsp.jsf.author.removePart_jsp._jspx_meth_h_005fform_005f0(removePart_jsp.java:249) at org.apache.jsp.jsf.author.removePart_jsp._jspService(removePart_jsp.java:178) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:598) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329) at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346) at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152) at org.sakaiproject.jsf.app.SakaiViewHandler.renderView(SakaiViewHandler.java:159) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:598) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329) at org.sakaiproject.jsf.util.SamigoJsfTool.dispatch(SamigoJsfTool.java:301) at org.sakaiproject.jsf.util.JsfTool.doPost(JsfTool.java:256) at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:369) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329) at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:489) at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1471) at org.sakaiproject.portal.charon.handlers.ToolHandler.doTool(ToolHandler.java:213) at org.sakaiproject.portal.charon.handlers.ToolHandler.doGet(ToolHandler.java:96) at org.sakaiproject.portal.charon.handlers.ToolHandler.doPost(ToolHandler.java:73) at org.sakaiproject.portal.charon.SkinnableCharonPortal.doPost(SkinnableCharonPortal.java:1264) at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:659) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:964) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:304) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662)