Your app worked, then one deploy broke it. Where do you look first?

A common one with Lovable and Bolt apps: it was live and fine, then a small change and a new deploy, and now it's a blank page, a 404 on refresh, or a login loop.

Often the code isn't the problem. Something outside it didn't come along:

• VITE_ env vars are baked in at build time, so set them on the host and redeploy.
• Supabase's Site URL and Redirect URLs may still point at an old address.
• Refreshing a page gives a 404? The host often needs a rewrite to index.html.

What's the last thing that broke after a deploy for you?

If you're stuck on one, App Rescue is $149 for one issue: https://patchandship.com/app-rescue?utm_source=devto&utm_medium=community&utm_campaign=app-rescue