Google oauth failed sign-in message is incomplete
I have a secondary email associated to my account. I had forgotten about it, and tried to sign-in with the secondary email address via the google sign-in button. I got the 422 message below.
It is not clear from the 422 message that the email might be registered as a secondary email. Even if it is indeed associated to an existing account, I cannot use it to login.
I suggest the error message also includes the following step: