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How to Fix Cloudflare 521 Error on Apache Servers - Resolve 'fatal: refusing to merge unrelated histories'-Mac Git Troubleshooting: index.lock File Exists

2026-07-28 05:56:50
How to Fix Cloudflare 521 Error on Apache Servers - Resolve 'fatal: refusing to merge unrelated histories'-Mac Git Troubleshooting: index.lock File Exists

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

Next references

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