In the dashlet "My tasks" there are two items: "Current tasks" and "Completed tasks".
When I click on the "Completed tasks" I see the following error on a red background:
Error while loading items
When this error occurs in the logs I see the following.
catalina.out:
...
Caused by: org.activiti.engine.ActivitiObjectNotFoundException: no deployed process definition found with id 'publishWhitepaper:1:1115'
at org.activiti.engine.impl.persistence.deploy.DeploymentManager.findDeployedProcessDefinitionById(DeploymentManager.java:75)
at org.activiti.engine.impl.cmd.GetDeploymentProcessDefinitionCmd.execute(GetDeploymentProcessDefinitionCmd.java:39)
at org.activiti.engine.impl.cmd.GetDeploymentProcessDefinitionCmd.execute(GetDeploymentProcessDefinitionCmd.java:26)
at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57)
at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:131)
at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)
at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)
at org.activiti.engine.impl.RepositoryServiceImpl.getDeployedProcessDefinition(RepositoryServiceImpl.java:138)
at org.alfresco.repo.workflow.activiti.ActivitiUtil.getDeployedProcessDefinition(ActivitiUtil.java:133)
at org.alfresco.repo.workflow.activiti.ActivitiTypeConverter.getTaskDefinition(ActivitiTypeConverter.java:223)
at org.alfresco.service.cmr.workflow.LazyActivitiWorkflowTask.<init>(LazyActivitiWorkflowTask.java:93)
at org.alfresco.repo.workflow.activiti.ActivitiWorkflowEngine.getAssignedTasks(ActivitiWorkflowEngine.java:1543)
... 92 more
Before that I installed and watched some examples of business processes, but then deleted them (and via workflow console). - most likely, I didn't do it correctly...
I can't understand why this error appear?..
no deployed process definition found with id 'publishWhitepaper:1:1115'
Maybe somewhere something is cached?
Axel Faust gave an exhaustive answer:
Is there enough functionality of the workflow admin console?
Now I understand the cause of the error: as Axel Faust said, "..the tables for historic information do require referential integrity in their relation to the process definition and are not automatically cascade-deleted when you undeploy a process."
Thanks to all for the assistance!