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Fix Git 'index.lock' File Exists Error in SourceTree - Fix Docker Build Context Canceled by Symlink Errors-How to Fix Cloudflare 521 Connection Error

2026-07-28 11:53:46
Fix Git 'index.lock' File Exists Error in SourceTree - Fix Docker Build Context Canceled by Symlink Errors-How to Fix Cloudflare 521 Connection Error

Result check

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