Hi people,
We have a workflow were sometimes approval are required from managers. All the Approvers are customers, not user agents. The workflow were running for almost one year and all were running with no problems. . In the last weeks, our senior manager were facing problems when trying to see the information in the form in order to proceed with the approval.
This is the message she got in her screen:

This means:
"Error: The user does not have permission to perform this action.
You do not have the necessary permissions to perform this action. Please contact your Jira administrator."
Note that all permissions are ready and this workflow are running OK since the begining. What could have happened to destabilize the flow?
Thank you.