Vovy opens your live app, reads the browser console for the crash, traces it to the file that broke, and walks the fix into your code.
My app just shows a white screen in production, find out why
How it works
- Open the console on the blank page: Vovy opens your site in Chrome with DevTools, where a white screen almost always leaves a red error like "Uncaught TypeError: Cannot read properties of undefined".
- Check for failed files: It checks the Network tab for JavaScript files that returned 404, a common cause after a deploy changes file names.
- Compare with the last good deploy: Vovy opens Vercel Deployments to see which deploy started the white screen and what commit it contained.
- Fix the crash in Cursor: It opens the file from the error, explains the bug, and has Cursor add the fix, often a missing env variable or a null check.
- Offer an instant rollback: While the fix ships, Vovy can use Instant Rollback to put the last working deploy back live. It asks first.
What you provide
- Your live URL
- Your project open in Cursor
What you get
- The exact error behind the white screen
- The deploy that caused it
- A code fix
- Optional rollback to a working version
FAQ
Why does it work on my Mac but not live?
The most common reasons are a missing environment variable in Vercel, a file name with different capitalization, or a route that only exists locally.
Will rolling back lose my changes?
No. Rollback just points your domain at an older deployment. Your code and newer deploys stay untouched.
Can I stop this happening again?
Wrap your app in an error boundary so a crash shows a friendly message instead of a blank page, and add Sentry so you hear about it first.
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