Workflow User Notifications triggered in State node throw NoSuchTaskInstanceTokenException

Issue

• When using notifications as part of the workflow, when triggered in a State node, the notifications are generated but when they are selected, the following exception appears in the logs

2023-05-09 20:47:25.666 ERROR [http-nio-8080-exec-9][WorkflowTaskUserNotificationHandler:295] null
com.liferay.portal.kernel.workflow.WorkflowException: com.liferay.portal.workflow.kaleo.exception.NoSuchTaskInstanceTokenException: No KaleoTaskInstanceToken exists with the primary key 0

 

Environment

• Liferay DXP 7.4

 

Resolution

• This issue occurred because the logic erroneously assumed that there will be a workflow Task associated with it, which is not always true for every case, as there can be Workflow Notifications that do not have Tasks associated with them.
• This is a known issue and the fix for this issue can be found in LPS-184878 and has been fixed as of Update 78 for Liferay DXP 7.4