Issue: Updt 29 Dec. Can't access social groups- Database Error [not fixed]

Update 16th Dec. The database issue has re-appeared today, this time it's affecting ability to access profile page of user.

Since past few hours, I'm unable to access my control panel. The rest of site (or whatever few links I accessed so far, I don't know if everything works) works fine but when go to settings I get database error. I've tried clearing cache, hard refesh and opening page on multiple different devices but the error persists. This is causing me a lot of inconvenience, hope whatever the issue is can be fixed soon.
EDIT: sending PM doesn't work either. Goes to database error on hitting send.
Screenshot: