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How to Fix PuTTY Connection Refused Error - Resolve npm Install Node Version Error-NGINX 502 Bad Gateway: Permission Denied Troubleshooting

2026-06-13 12:25:57
How to Fix PuTTY Connection Refused Error - Resolve npm Install Node Version Error-NGINX 502 Bad Gateway: Permission Denied Troubleshooting

Result check

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