Getting a '405 Method Not Allowed' Error – What's the Fix? or Why Am I Seeing '405 Method Not Allowed

405 usually means the server’s saying "I see you, but nah, you can’t do that here."

Common fixes:
- Wrong HTTP method (like others said).
- Missing auth headers (some APIs reject POSTs without auth).
- Server-side routing misconfigured (e.g., Django might need `@require_POST` decorator).

If you’re using fetch() in JS, make sure you’re not accidentally sending OPTIONS first (CORS preflight). DevTools’ Network tab can show you the actual request being sent.