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Fix PowerShell 504 Gateway Timeout When Calling REST API - How to Check Which Process Is Using a Port in PowerShell-npm install ERESOLVE: Quick Fix Guide

Updated 2026-06-14 09:56:28browser-issues
Fix PowerShell 504 Gateway Timeout When Calling REST API - How to Check Which Process Is Using a Port in PowerShell-npm install ERESOLVE: Quick Fix Guide
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.