Sudden "The requested URL or resource could not be found."

[rokejulianlockhart (Mr. Beedell, Roke Julian Lockhart (RJLB))]

@Geoffrey_Challen

“The requested URL or resource could not be found.” when loading any page

A potential cause of lesser faults, with similar symptoms, is:

SSO Broken - The requested URL or resource could not be found

I’m afraid this problem is back and now removing the tag that was causing the problem is not working. How do I identify the tag id 842 that I see in the logs? Thanks! ActiveRecord::RecordNotUnique (PG::UniqueViolation: ERROR: duplicate key value violates unique constraint "idx_tag_users_ix1" DETAIL: Key (user_id, tag_id, notification_level)=(8118, 842, 0) already exists. ) Logs from attempted user login

A new topic also exists for one symptom, so if relevant, follow that:

Forum Email Validation shows URL error

Though, there was also:

Can't rename tag: The requested URL or resource could not be found

Deleting was fixed at the same time. The commit is here for reference:

…to confound it further.