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Grade Center Displays 'comput_err' Error in SmartViews

Instructors are receiving 'Unable to set property 'comput_err' of undefined or null reference' error when accessing Grade Center Smart Views in some Courses. Error is displayed - "Error: The data received from the server is not correct and cannot

Description

Instructors are receiving 'Unable to set property 'comput_err' of undefined or null reference' error when accessing Grade Center Smart Views in some Courses.Error is displayed - "Error: The data received from the server is not correct and cannot be used to display the Grade Center. Reload the Grade Center in case the error is due to an intermittent communication issue.TypeError: Unable to set property 'comput_err' of undefined or null reference"

Symptoms

Sample bb-services error:

2015-10-01 15:24:38 -0500 - Error getting grade center data - blackboard.persist.PersistenceRuntimeException: blackboard.persist.PersistenceException: Error executing database transaction BookDataTxn: 
at blackboard.webapps.gradebook2.struts.BookDataToJSON.writeTo(BookDataToJSON.java:274) 
at blackboard.webapps.gradebook2.struts.actions.GetJSONDataAction.execute(GetJSONDataAction.java:124) 
at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:53) 
at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:64) 
at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48) 
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191) 
at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305) 
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191) 
at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280) 
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858) 
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:446) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) 
at blackboard.struts.BbActionServlet.service(BbActionServlet.java:103) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
at sun.reflect.GeneratedMethodAccessor541.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:169) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:297) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
at sun.reflect.GeneratedMethodAccessor539.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.DevNonceFilter.doFilter(DevNonceFilter.java:68) 
at sun.reflect.GeneratedMethodAccessor537.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.B2ContextFilter.doFilter(B2ContextFilter.java:137) 
at sun.reflect.GeneratedMethodAccessor535.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.ContentTypeFilter.doFilter(ContentTypeFilter.java:53) 
at sun.reflect.GeneratedMethodAccessor531.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.XssServletFilter.doFilter(XssServletFilter.java:48) 
at sun.reflect.GeneratedMethodAccessor636.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.XssInputValidationFilter.doFilter(XssInputValidationFilter.java:40) 
at sun.reflect.GeneratedMethodAccessor525.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.ContentIsolationFilter.doFilter(ContentIsolationFilter.java:83) 
at sun.reflect.GeneratedMethodAccessor522.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.RequestSessionFilter.doFilter(RequestSessionFilter.java:155) 
at sun.reflect.GeneratedMethodAccessor635.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.CloudSessionFilter.doFilter(CloudSessionFilter.java:103) 
at sun.reflect.GeneratedMethodAccessor544.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.RequestSecurityFilter.doFilter(RequestSecurityFilter.java:77) 
at sun.reflect.GeneratedMethodAccessor540.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at blackboard.platform.servlet.RequestClassParamFilter.doFilter(RequestClassParamFilter.java:47) 
at sun.reflect.GeneratedMethodAccessor538.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:277) 
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:274) 
at java.security.AccessController.doPrivileged(Native Method) 
at javax.security.auth.Subject.doAsPrivileged(Subject.java:536) 
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:309) 
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:249) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) 
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:191) 
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:187) 
at java.security.AccessController.doPrivileged(Native Method) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:186) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
at org.apache.catalina.valves.StuckThreadDetectionValve.invoke(StuckThreadDetectionValve.java:221) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:683) 
at blackboard.tomcat.valves.LoggingRemoteIpValve.invoke(LoggingRemoteIpValve.java:44) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070) 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) 
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1736) 
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1695) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
at java.lang.Thread.run(Thread.java:744) 
Caused by: blackboard.persist.PersistenceException: Error executing database transaction BookDataTxn: 
at blackboard.db.ConnectionManager.performTransaction(ConnectionManager.java:385) 
at blackboard.webapps.gradebook2.struts.BookDataToJSON.writeTo(BookDataToJSON.java:256) 
... 223 more 
Caused by: java.lang.NullPointerException

Steps to Replicate

  1. Login to Blackboard Learn

  2. Enter a Course that contains Smart Views

  3. When in the Course, go to Grade Center > Full Grade Center

  4. Click on the 'Filter' option and select any of the Smart Views

Expected Behavior:
The SmartView will open correctly
​Observed Behavior:
The following error occurs:
Error: The data received from the server is not correct and cannot be used to display the Grade Center. Reload the Grade Center in case the error is due to an intermittent communication issue.
TypeError: Unable to set property 'comput_err' of undefined or null reference"

Resolution / Workaround

Please contact Blackboard Technical Support.

Target Release

Will Not Fix

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