Railway·Fixdeploybeginner

Railway Deployment Failing

Quick Answer

How do I fix Railway Deployment Failing?

Missing start command, missing PORT variable, or build configuration errors. Start with "Check build logs" before making broader code changes.

Fix signals

What this answers: Why railway deployment failing happens and what to change first.
Fastest move: Check build logs
Use this page if: Deploy fails in Railway

If this keeps happening

Open the next decision, not just the patch

Use these when the current fix is helpful, but the real answer is a better tool choice, a cleaner workflow layer, or a more trustworthy launch path.

Deploy hub

Open this when the bug is really about production setup, not only one hosting-specific fix.

Open this next →

Production monitoring guide

Open this when you need a cleaner operational path after the app goes live.

Open this next →

Tool picker

Open this when hosting pain is making you rethink the broader stack decision.

Open this next →

Cursor review

Open this when deploy pain is pushing you toward a more code-first workflow with tighter control.

Open this next →

Lovable reviews

Open this when production friction is making you reconsider the tradeoff between generation speed and later cleanup cost.

Open this next →

Quick Fix Summary

Most likely cause	Missing start command, missing PORT variable, or build configuration errors.
Fastest fix	Check build logs
Use this page if	Deploy fails in Railway

You're in the right place if...

!Deploy fails in Railway
!Build logs show errors
!Service won't start

Why this happens

Missing start command, missing PORT variable, or build configuration errors.

Fix

Check build logs

Railway Dashboard → your service → Deployments → click failed deploy → View logs.

Fix common issues

Most Railway failures are one of these:

Missing start command:
Railway Settings → Deploy → Start Command → npm run start

Missing PORT:
Add to your server code:
const port = process.env.PORT || 3000

Build timeout:
Railway Settings → increase build timeout

Prevent this next time

Always set a start command and use process.env.PORT. Test locally with PORT=3000 npm start.