Vibe-Code Rescue

Platform

CORS fixes

The browser blocking a request to another site after you go live.

2 fixes, most common first.

  1. Rank 8. Blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present

    "Blocked by CORS policy" on your live site? The server you call must allow your domain. How to fix it for APIs you own and ones you don't.

  2. Rank 36. TypeError: Failed to fetch (only in production)

    The live site says Failed to fetch, but the preview worked? The browser could not open the connection. Check the URL, HTTPS, and the console, not the HTTP status.

All platforms

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