Hie there.
I have followed you toturial.
I do get the form howevery there is an extra field called "Id token". I have not idea what variable or value goes there.
In the context of your form, you may need to obtain the access token after the social login process and pass it to the server-side as the "Id token" field. The exact implementation may depend on the specific social authentication provider you are using and the backend framework you are working with.