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Your Lovable app works until you refresh, then Vercel says 404. The one-file fix
The home page loads, the buttons work, and then a refresh or a shared link lands on 404 NOT_FOUND. Your app isn't broken. The host is looking for a file that was never there. Here's why, and the fix for Vercel, Netlify and Cloudflare, from their own docs.
Syntax · 2h ago · 10 min