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Fix Git 'index.lock' File Exists Error in IntelliJ - Cloudflare 521 Error After Server Restart: Fixes-Git Push Rejected Non Fast Forward: Troubleshooting Checklist

Updated 2026-07-28 05:51:10browser-issues
Fix Git 'index.lock' File Exists Error in IntelliJ - Cloudflare 521 Error After Server Restart: Fixes-Git Push Rejected Non Fast Forward: Troubleshooting Checklist
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.