I use Nintex Workflows for SharePoint 2016 on-prem. Since past couple of weeks I have been getting "Workflow_Name failed to run" error for a few workflows with "Assign a Flexi Task" action. I get this error when the concerned users don't respond to the Flex-task action for more than 3 days and the workflow outcome changes to "Canceled". If they approve / reject the request within 3 days, the workflow runs smooth without any errors.
Here is the screenshot:
I would really appreciate, if anyone could help with this or provide some inputs to why this might be happening. Thanks in advance.