If you have Tempo plugin this might be the issue, you need to search for a corrupted user which shows in the logs as invalid user with invalid ID - then troubleshoot with this article https://confluence.atlassian.com/pages/viewpage.action?pageId=373261121, restart JIRA and problem solved.
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs