[Building Sakai] Assignments Errors

Geng, Kelly gengx at muohio.edu
Tue Sep 20 07:48:39 PDT 2011 

Hi Sakai developers,
One of the instructors was trying to batch-upload "feedback as attachment" for all students and encountered an error(which was not captured). After that, she can no longer access the submitted assignments because the following error shows up in place of the number of submissions(see attached screenshot). Anyone has any idea what this is about? We are running sakai2.7.x.
Thanks!
Kelly
Miami University
=====================================================================================================
VelocityServlet : Error processing the template
org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getUngradedSubmissionsCount' in  class org.sakaiproject.assignment.impl.DbAssignmentService threw exception class java.lang.IllegalArgumentException : java.lang.NullPointerException
org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getUngradedSubmissionsCount' in  class org.sakaiproject.assignment.impl.DbAssignmentService threw exception class java.lang.IllegalArgumentException : java.lang.NullPointerException
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:309)
       at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:207)
        at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:357)
        at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:135)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:344)
        at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:153)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:128)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271)
        at org.apache.velocity.Template.merge(Template.java:296)
       at org.apache.velocity.servlet.VelocityServlet.mergeTemplate(VelocityServlet.java:448)
        at org.apache.velocity.servlet.VelocityServlet.doRequest(VelocityServlet.java:387)
        at org.apache.velocity.servlet.VelocityServlet.doGet(VelocityServlet.java:333)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:659)
        at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:529)
        at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:493)
        at org.sakaiproject.vm.VmServlet.includeVm(VmServlet.java:162)
        at org.sakaiproject.cheftool.VelocityPortletPaneledAction.toolModeDispatch(VelocityPortletPaneledAction.java:432)
        at org.sakaiproject.cheftool.ToolServlet.doGet(ToolServlet.java:236)
        at org.sakaiproject.cheftool.VelocityPortletPaneledAction.doGet(VelocityPortletPaneledAction.java:1025)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
        at org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:56)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:585)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:659)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:359)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)
        at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:512)
        at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1303)
        at org.sakaiproject.portal.charon.handlers.ToolHandler.doTool(ToolHandler.java:204)
        at org.sakaiproject.portal.charon.handlers.ToolHandler.doGet(ToolHandler.java:96)
        at org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPortal.java:839)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:646)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
        at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
        at java.lang.Thread.run(Thread.java:662)

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