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Fix Nginx Upstream Connection Refused Timeout Error - Resolve 'invalid parameter' in Nginx Config Test-Git Rebase Error: index.lock File Exists – Solution

Updated 2026-07-28 11:48:21developer-tools

Fix Nginx Upstream Connection Refused Timeout Error - Resolve 'invalid parameter' in Nginx Config Test-Git Rebase Error: index.lock File Exists – Solution

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.