User not found
A route expected a user row (by id, session, or admin target) and Prisma returned none (404 User not found.). Common on account profile, admin user edit, 2FA, SFTP credential admin, and similar.
Why this happens
Deleted account, wrong id, stale session after deletion, or admin typo. Distinct from login Invalid email or password (no enumeration) and from longer admin “Use the public user #…” variants.
Diagnose and fix
1. Member: sign out/in; if the account was removed, register again.
2. Admin: open the user from Manage users search; confirm the id.
3. Retry the action after confirming the user still exists.
4. Distinct from Account not found (OAuth-oriented catalog sibling).