I'm trying to add a Google Sign In Authentication system to my app, but I keep getting a strange error that I haven't seen anyone get. I'm using EXACTLY the [google example code](https://developers.google.com/identity/sign-in/web/).

I thought it could be some mistake when loading the api, so I checked the async loading and everything seems to be loading properly, but I keep getting this error in the console: 

> 
> gapi.auth2.ExternallyVisibleError: Invalid cookiePolicy
> 
> 
> 

I searched everywhere for people with the same problem, but I could not find anything similar.

Any ideas?

**EDIT:** I tried to create a page with ONLY the code of the tutorial, but the error still occurs.