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Fix npm run build Failure from Missing Env Variables - Chrome Sync Broken by VPN: Practical Fixes-Troubleshooting Nginx 502: Backend Connection Refused

Updated 2026-07-28 11:00:07developer-tools
Fix npm run build Failure from Missing Env Variables - Chrome Sync Broken by VPN: Practical Fixes-Troubleshooting Nginx 502: Backend Connection Refused
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