Lovable App Build Fails on Vercel
Quick Answer
TypeScript errors, missing dependencies, or Node.js version mismatch between Lovable's environment and Vercel. Start with "Read the actual error" before making broader code changes.
You're in the right place if...
- !Vercel shows red X on deployment
- !Build error in Vercel logs
- !Works in Lovable preview but fails to deploy
Why this happens
TypeScript errors, missing dependencies, or Node.js version mismatch between Lovable's environment and Vercel.
Fix
Read the actual error
Vercel Dashboard → Deployments → click failed deployment → View build logs. Scroll to the first red error line. Copy that exact error text.
Tell Lovable to fix it
Paste the exact error into Lovable:
Copy this prompt
My Vercel deployment is failing with this error: [paste the exact error from Vercel logs] Please fix this error so the app deploys successfully to Vercel.
Prevent this next time
After every major Lovable change, deploy to Vercel to catch errors early. Don't wait until you have 20 changes to deploy.
Frequently Asked Questions
Lovable preview is more lenient than Vercel's production build. TypeScript errors and missing deps are caught on Vercel.
Export to GitHub, open in Cursor, and fix the specific error manually. Then push back to deploy.
Related fixes
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