Error while dragging tickets in Kanban boards

Question

Hey all,

I'm having an issue that started a week ago (give or take a couple days), when I drag tickets in a Kanban board, I get the following error:

I also can't seem to preview any tickets from a Kanban board either. I've tested on multiple Kanban boards, with tickets that were assigned to me, to others, and unassigned tickets, all giving me this error.

I've attempted a couple of other solutions that other's have found, but none have worked:

https://community.atlassian.com/t5/Jira-Core-Server-questions/Issue-does-not-exist-or-you-do-not-have-permission-to-see-it/qaq-p/1005366

https://community.atlassian.com/t5/Jira-questions/Rest-API-Issue-does-not-exist-or-you-do-not-have-permission-to/qaq-p/1165586

My Jira admin says my account has site admin privileges, and that has never changed so I'm not sure where else to debug my issue. Anyone have any ideas?

EDIT: I've attached an error I'm seeing from my Chrome DevTools

Which contains this for the response:

{"errorMessages":["Issue does not exist or you do not have permission to see it."],"errors":{}}

Ming Tang_s9rsvl · Answer

Just tried it out, it says I'm an Administrator for the project.

Corinne Deflaux · Answer

This seems like permission issues on the project level, have you tried running the permission helper under admin tools? Its under Admin>System in the Admin Helper section.