Google Sign In error 12500

Question

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

Answer 1

In my case I was working on a non-production app, the issue was that when creating a project in firebase console, there were issues synchronizing SHA-1 keys back and forth from Firebase & Google developer consoles. So, I decided to create the project first on the Google Developer console, and then select it when creating a new project on Firebase console.

I also made a tutorial for this, that may help you.