Firebase Sign In: GoogleSignIn onActivityResult() returns RESULT_CANCELED with Result error 12500

Question

Ok, i am aware that this question has been asked multiple times, but for some reason this error keeps happening, this is the scenario:

• Created PROD firebase

Answer 1

My problem was solved when I realized that I had already logged in with the same email through another method. For example, if the user logs in for the first time using the email and password method, when trying to log in via Google login the error will appear. Then, delete the email and try again and you will see that everything is ok. It doesn't make much sense, but this is what happens.