I am trying to integrate Google Sign In into my app. I don\'t have a back-end server, I am just getting the details of the logged on Google Account to my app.
I firs
Support email and also all project and privacy links are necessary for Google SignIn to work, otherwise it throws 12500.
Set it on https://console.developers.google.com/apis/credentials on the bottom of second tab named "OAuth consent screen" - there you'll find three links that need to be configured.
This is not mentioned ANYWHERE in the Firebase guides.