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Fix PyCharm Virtual Environment Not Activating - Docker Compose: Fix 'Port Already in Use on Host' Error-Nginx Upstream Connection Refused in Docker: How to Fix

Updated 2026-07-28 14:14:23macos-help
Fix PyCharm Virtual Environment Not Activating - Docker Compose: Fix 'Port Already in Use on Host' Error-Nginx Upstream Connection Refused in Docker: How to Fix
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.