Hi & thx for this tuto... I tried to follow it with the difference that I have Devise + JWT with a (working) custom Devise Strategy, not Devise Token Auth. I am still unable to authenticate with facebook though... :-/. Here is my detailed [explanation](https://stackoverflow.com/questions/57205226/reactjs-web-client-ruby-on-rails-api-server-authentication-with-facebook-g) in Stack Overflow, could you please help me? Looking forward to hearing back from you, YassineD