Vercel rescue guide

Vercel deployment fails for your AI-built app

Vercel expects specific build outputs, framework presets, and runtime configs. AI builders do not always produce what Vercel expects, and deploys fail with opaque errors.

What is probably broken

The build passes locally or in the AI builder, but Vercel fails with cryptic errors about missing outputs, wrong runtime, or build timeouts.

What production should look like

A clean Vercel deploy with correct build config, environment variables, and framework settings.

STEP 01

Read the Vercel build log

Vercel tells you exactly what failed. The trick is knowing what to look for.

  • Find the first error in the build log, not the last.
  • Check whether the build command, output directory, and framework preset are correct.
  • Look for missing environment variable warnings that caused the build to fail.

STEP 02

Fix the build configuration

Align Vercel settings with what the AI builder actually produces.

  • Set the correct framework preset (Next.js, Vite, Remix, or Other).
  • Confirm the build output directory matches the framework default.
  • Add any missing environment variables to the Vercel project settings.

STEP 03

Test and deploy

Trigger a new deploy and verify the app loads on the Vercel URL.

  • Push a commit to trigger a fresh Vercel build.
  • Confirm the app loads, auth works, and database calls succeed.
  • Set up the custom domain and HTTPS after the build passes.

Quick check

Is your app production-ready?

If you cannot tick all five, we can fix it. Send us the repo and we handle the rest.

  • ?Custom domain with HTTPS
  • ?Environment variables configured
  • ?Database wired and backed up
  • ?Auto-deploy on push
  • ?Smoke tested and live

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