Error IndexErrors people actually search for when building on AI app builders — what causes them, and how to fix them.All platformsBase44BoltLovableNetlifyRailwaySupabaseVercelv0BoltAPI key visible in the client bundleAPI key exposed in client bundleBuild succeeds but the deployed site returns 404404 This page could not be foundSupabase anon key in the frontend grants full read/write on every tableRow Level Security is disabled
