"Failed to load!" Console Developer Google

If your symptoms include

1. GCP not loading project
2. Youtube and Youtube Music not playing
3. Allow CORS: Access-Control-Allow-Origin extension is installed

Turning the extension off will fix it.

Ad-blockers add-ons were the cause of this issue for me. Whitelisting console.cloud.google.com domain for ad-block solved it.

Clearing the cache of browser worked for me in Chrome!