Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Dear LauGCG,
Greetings! Thank you for posting in Microsoft Community.
Per your description, you get error message when trying to access the version history of an item in Microsoft Lists. For the situation you encountered, we do understand the inconvenience caused and apologize for it.
To narrow down the issue, you may try using a different browser such as Edge, Chrome or Firefox, open your Microsoft Lists and see if you can access item's version history.
If same error still appears even in different browsers, we're afraid it could be a temporarily server-side issue and need to be investigated and fixed from back end.
The best way to troubleshoot the situation further is to report the issues to the related team, because the support team has higher permission and more resource to check the issue from back end, help you find root cause and fix the issue from back end. This would be the most efficient way in handling this case for you.
Microsoft 365 admin has right permission to contact related team. Therefore, I sincerely recommend you use Microsoft 365 admin permission, follow steps in this article Get support - Microsoft 365 admin | Microsoft Learn, raise a support ticket and contact the related team.
For reference: How do I find my Microsoft 365 Admin
Appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Tina | Microsoft Community Moderator