Railway App Crashes After Deploy
Quick Answer
Usually missing environment variables or the app crashing on startup due to a runtime error. Start with "Check logs" before making broader code changes.
You're in the right place if...
- !Deploy succeeds but app crashes
- !Service keeps restarting
- !502 Bad Gateway errors
Why this happens
Usually missing environment variables or the app crashing on startup due to a runtime error.
Fix
Check logs
Railway Dashboard → your service → Logs. Read the crash message.
Add missing env vars
Railway → Variables → add all vars from .env. Most crashes are missing DATABASE_URL or API keys.
Prevent this next time
Add ALL environment variables before the first deploy. Test locally with production-like env vars.
Frequently Asked Questions
Railway Dashboard → your service → Logs. The crash message is usually at the bottom.
Missing environment variables. Check that every variable in your .env file is also in Railway Variables.
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