PHP error with oauth2

[Fred_K]

@ocsav

so should I follow only from the OAuth2 step !?

Yes.

I've followed this tutorial

Using OAuth2 Connector with Google

Overview Using the OAuth2 Connector in Wappler you can add a “social login” option to your website, so the users can directly log in using their Google account. In this tutorial, we will show you how to create accounts for new users and also how to log the registered users in, using their Google account data - like email and Google ID. Setting up a google developer account First, go to https://developers.google.com/identity/sign-in/web/sign-in and sign in using your Google account. Create …

...and made some fixes (as per my sharing above)