I’m facing an issue where a Railway service exits immediately at runtime without producing any deploy logs, even though the build succeeds.

What’s happening:

• Build succeeds (npm ci, npm run build, tsc)
• Start command runs (npm start)
• App returns 502
• No deploy/runtime logs at all (stdout/stderr never attach)

Key debugging steps already done:

• Verified correct start command (npm start)
• Verified correct port binding (process.env.PORT, 0.0.0.0)
• Pinned Node to 18.20.8
• Environment variables are present
• Removed any process.exit or early exits
• Deployed a minimal probe app (10-line Express server with a single route and console logs)

Can it be verified if there are envrionment curroption issue or if any backend logs can be shared which are not visible on UI

Thanks