SUPABASE ,When I attempt to log in, a popup error message

I recently created a project on Hostinger Horizon, and they offered me the option to connect it with Supabase. My application was working properly on localhost, but after connecting with Supabase, the login function stopped working. When I attempt to log in, a popup error message appears (I have attached a screenshot for your reference). I contacted Hostinger Horizon Support, and they informed me that this issue can only be resolved by the Supabase team.