invalid_credentials
what this Supabase Auth error means
How it shows up
AuthApiError: Invalid login credentials
What it means
Supabase Auth did not recognize the login details or the grant type sent with the sign-in request, so no session was created.
The usual cause in an AI-built app
In AI-built apps the person often has no password account in this project: they signed up with Google, the sign-up form failed silently, or the app was moved to a new Supabase project that has no users yet.
Check this first
In the Supabase dashboard, open Authentication, find the email under Users and check which sign-in provider the account uses.