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Fix Git 'index.lock' File Exists Error on Linux - Docker Compose Ports Not Working? Here's How to Fix-How to Fix Git Unrelated Histories Error When Merging Branches

Updated 2026-07-28 08:57:38macos-help

Fix Git 'index.lock' File Exists Error on Linux - Docker Compose Ports Not Working? Here's How to Fix-How to Fix Git Unrelated Histories Error When Merging Branches

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.