Hi Railway team,

My Python Flask app deploys successfully but all public requests return

"Application failed to respond." This started happening after several hours

of successful operation.

Project: capable-heart

Service: docOrder

Public URL: docorder-production.up.railway.app (regenerating the domain

did not help — new URLs have the same issue)

Current state:

- Build succeeds

- Deploy status: Active

- Deploy logs show Flask running correctly on 0.0.0.0:8080

- Target port in Networking settings: 8080

- This matches Railway's injected PORT env var

- Rolled back to an earlier deployment that was previously working —

same error, so this is not code-related

- Restarting the deployment did not help

- Adding PORT=5000 manually did not help (removed again)

Earlier today this same deployment worked fine. I made several env variable

changes and code commits. After rolling back both, issue persists.

Request ID from error page: 6I_K_mlqSkq2s-A_2prcFg

Any guidance? The app is running internally but not reachable from outside.