11-Nov-2017 11:00:53.960 ERROR [Thread-29] org.sakaiproject.portal.service.BullhornServiceImpl.lambda$update$1 Failed to find either the assignment or the site org.sakaiproject.exception.IdUnusedException id: 1fb1daf5-0b55-4c86-8304-c4f053b0a44c at org.sakaiproject.assignment.impl.AssignmentServiceImpl.getAssignment(AssignmentServiceImpl.java:1075) at sun.reflect.GeneratedMethodAccessor3205.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) at com.sun.proxy.$Proxy106.getAssignment(Unknown Source) at org.sakaiproject.portal.service.BullhornServiceImpl.lambda$update$1(BullhornServiceImpl.java:305) at java.lang.Thread.run(Thread.java:745) 11-Nov-2017 11:00:54.055 WARN [http-nio-20013-exec-4] org.hibernate.engine.jdbc.spi.SqlExceptionHelper.logExceptions SQL Error: 1048, SQLState: 23000 11-Nov-2017 11:00:54.055 ERROR [http-nio-20013-exec-4] org.hibernate.engine.jdbc.spi.SqlExceptionHelper.logExceptions Column 'ASSIGNMENT_ID' cannot be null 11-Nov-2017 11:00:54.057 WARN [http-nio-20013-exec-4] org.hibernate.engine.jdbc.spi.SqlExceptionHelper.logWarning SQL Warning Code: 1048, SQLState: 23000 11-Nov-2017 11:00:54.057 WARN [http-nio-20013-exec-4] org.hibernate.engine.jdbc.spi.SqlExceptionHelper.logWarning Column 'ASSIGNMENT_ID' cannot be null org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement at org.springframework.orm.hibernate4.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:163) at org.springframework.orm.hibernate4.HibernateTemplate.doExecute(HibernateTemplate.java:344) at org.springframework.orm.hibernate4.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:309) at org.springframework.orm.hibernate4.HibernateTemplate.saveOrUpdate(HibernateTemplate.java:682) at org.sakaiproject.assignment.impl.AssignmentSupplementItemServiceImpl.saveModelAnswer(AssignmentSupplementItemServiceImpl.java:218) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) at com.sun.proxy.$Proxy147.saveModelAnswer(Unknown Source) at org.sakaiproject.assignment.tool.AssignmentAction.saveAssignmentSupplementItem(AssignmentAction.java:7878) at org.sakaiproject.assignment.tool.AssignmentAction.post_save_assignment(AssignmentAction.java:7788) at org.sakaiproject.assignment.tool.AssignmentAction.doPost_assignment(AssignmentAction.java:7345) at org.sakaiproject.assignment.tool.AssignmentAction.doAssignment_form(AssignmentAction.java:9981) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.sakaiproject.cheftool.VelocityPortletPaneledAction.actionDispatch(VelocityPortletPaneledAction.java:742) at org.sakaiproject.cheftool.VelocityPortletPaneledAction.processAction(VelocityPortletPaneledAction.java:554) at org.sakaiproject.cheftool.ToolServlet.doGet(ToolServlet.java:230) at org.sakaiproject.cheftool.VelocityPortletPaneledAction.doGet(VelocityPortletPaneledAction.java:1154) at org.sakaiproject.cheftool.ToolServlet.doPost(ToolServlet.java:154) at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) at org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:56) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:411) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:467) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:351) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311) at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:513) at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1488) at org.sakaiproject.portal.charon.handlers.SiteHandler.doToolBuffer(SiteHandler.java:1227) at org.sakaiproject.portal.charon.handlers.SiteHandler.bufferContent(SiteHandler.java:1061) at org.sakaiproject.portal.charon.handlers.SiteHandler.doSite(SiteHandler.java:490) at org.sakaiproject.portal.charon.handlers.SiteHandler.doGet(SiteHandler.java:266) at org.sakaiproject.portal.charon.handlers.SiteHandler.doGet(SiteHandler.java:154) at org.sakaiproject.portal.charon.handlers.WorksiteHandler.doPost(WorksiteHandler.java:69) at org.sakaiproject.portal.charon.SkinnableCharonPortal.doPost(SkinnableCharonPortal.java:1172) at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:460) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:677) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1457) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:72) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:211) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3127) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3560) at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:98) at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:492) at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:197) at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:181) at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:216) at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:334) at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:289) at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:195) at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:126) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:114) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:684) at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:676) at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:671) at org.springframework.orm.hibernate4.HibernateTemplate$16.doInHibernate(HibernateTemplate.java:686) at org.springframework.orm.hibernate4.HibernateTemplate.doExecute(HibernateTemplate.java:341) ... 77 more Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'ASSIGNMENT_ID' cannot be null at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:404) at com.mysql.jdbc.Util.getInstance(Util.java:387) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:932) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478) at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1274) at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:780) at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2073) at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2009) at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5094) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1994) at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61) at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208) ... 97 more 11-Nov-2017 11:00:54.059 WARN [http-nio-20013-exec-4] org.sakaiproject.assignment.impl.AssignmentSupplementItemServiceImpl.saveModelAnswer org.sakaiproject.assignment.impl.AssignmentSupplementItemServiceImpl@42f5696c.saveModelAnswerQuestion() Hibernate could not save model answer for assignment null 11-Nov-2017 11:00:54.060 ERROR [http-nio-20013-exec-4] org.hibernate.AssertionFailure. HHH000099: an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: null id in org.sakaiproject.assignment.api.model.AssignmentModelAnswerItem entry (don't flush the Session after an exception occurs) 11-Nov-2017 11:00:54.066 WARN [http-nio-20013-exec-4] org.sakaiproject.cheftool.VelocityPortletPaneledAction.actionDispatch Exception calling method doAssignment_form java.lang.reflect.InvocationTargetException (Caused by org.hibernate.AssertionFailure: null id in org.sakaiproject.assignment.api.model.AssignmentModelAnswerItem entry (don't flush the Session after an exception occurs)) java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.sakaiproject.cheftool.VelocityPortletPaneledAction.actionDispatch(VelocityPortletPaneledAction.java:742) at org.sakaiproject.cheftool.VelocityPortletPaneledAction.processAction(VelocityPortletPaneledAction.java:554) at org.sakaiproject.cheftool.ToolServlet.doGet(ToolServlet.java:230) at org.sakaiproject.cheftool.VelocityPortletPaneledAction.doGet(VelocityPortletPaneledAction.java:1154) at org.sakaiproject.cheftool.ToolServlet.doPost(ToolServlet.java:154) at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) at org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:56) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:411) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:467) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:351) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311) at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:513) at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1488) at org.sakaiproject.portal.charon.handlers.SiteHandler.doToolBuffer(SiteHandler.java:1227) at org.sakaiproject.portal.charon.handlers.SiteHandler.bufferContent(SiteHandler.java:1061) at org.sakaiproject.portal.charon.handlers.SiteHandler.doSite(SiteHandler.java:490) at org.sakaiproject.portal.charon.handlers.SiteHandler.doGet(SiteHandler.java:266) at org.sakaiproject.portal.charon.handlers.SiteHandler.doGet(SiteHandler.java:154) at org.sakaiproject.portal.charon.handlers.WorksiteHandler.doPost(WorksiteHandler.java:69) at org.sakaiproject.portal.charon.SkinnableCharonPortal.doPost(SkinnableCharonPortal.java:1172) at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:460) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:677) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1457) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: org.hibernate.AssertionFailure: null id in org.sakaiproject.assignment.api.model.AssignmentModelAnswerItem entry (don't flush the Session after an exception occurs) at org.hibernate.event.internal.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:77) at org.hibernate.event.internal.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:192) at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:152) at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:231) at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:102) at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:55) at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1258) at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425) at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101) at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177) at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:584) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730) at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:504) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:292) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) at com.sun.proxy.$Proxy147.saveModelAnswer(Unknown Source) at org.sakaiproject.assignment.tool.AssignmentAction.saveAssignmentSupplementItem(AssignmentAction.java:7878) at org.sakaiproject.assignment.tool.AssignmentAction.post_save_assignment(AssignmentAction.java:7788) at org.sakaiproject.assignment.tool.AssignmentAction.doPost_assignment(AssignmentAction.java:7345) at org.sakaiproject.assignment.tool.AssignmentAction.doAssignment_form(AssignmentAction.java:9981) ... 57 more