How to Fix ”DevTools Failed to Load SourceMap” Error in Javascript?


  1. Clear Cache and Hard Reload: Clear your browser's cache and do a hard reload by pressing Ctrl + Shift + R (Windows) or Cmd + Shift + R (Mac).

  2. Check Console Logs: Check your browser's console logs for any errors related to loading sourcemaps. Fix any errors that you find.

  3. Check SourceMap URLs: Check if the URLs for your sourcemaps are correct and accessible. Make sure that they are not blocked by firewalls or blocked by the CORS policy.

  4. Update Browser: Make sure that your browser is up-to-date with the latest version available.

  5. Disable Extensions: Disable any browser extensions that might be interfering with loading sourcemaps.

  6. Disable Ad Blockers: Disable any ad blockers that might be interfering with loading sourcemaps.

  7. Check Your Code: Check your code for any errors that might be causing the issue and fix them.

  8. Use CDN version of Library: If you are using a library, try using the CDN version of that library instead of the locally installed version.

  9. Seek Assistance: If all else fails, seek assistance from the developer community or the library's support team.

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