Session not found
DELETE /api/account/sessions/[id] returned 404 Session not found. when no session row exists for that id and member.
Why this happens
Stale UI after the session already ended, wrong id, or already revoked. Distinct from Revoking sessions is disabled on this site (403).
Diagnose and fix
1. Refresh Active sessions / Editable session list.
2. Retry revoke on a listed session.
3. If revoke is blocked site-wide, see Revoking sessions is disabled on this site.
4. See Could not revoke session for other failures.