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Docker Container Exits Immediately with Exit Code 137 - Chrome Keeps Crashing on Startup? Fix the Loop-How to Fix Cloudflare 521 Error with Firewall Settings

2026-07-28 21:24:13
Docker Container Exits Immediately with Exit Code 137 - Chrome Keeps Crashing on Startup? Fix the Loop-How to Fix Cloudflare 521 Error with Firewall Settings

Result check

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

Next references

Docker Compose Port Conflict: Quick Fix GuideHow to Fix Chrome Startup Crash by Disabling ExtensionsFix Nginx Upstream Connection Refused Socket ErrorDocker Container Exits Immediately After EntrypointHow to Fix Nginx Upstream Connection Refused on Port 80How to Fix Cloudflare 522 Error: Step-by-Step Support Guide