The problem is, I have generated the token at least 3 time, but I still have the same error and I don’t know why… I’m wondering if there is anything else to do. Or maybe I have created something, like my own app, and nothing works.
I can’t use dotenv like the editor said, but instead I put the auth code directly into the function, like so : ComfyJS.Init( "DuckenScott", 'oauth:wrk4x945pz0wfo4xjzb73xxxxxxxxx' );
I think I did nothing wrong, that’s why I’m a little bit lost, the documentation is simple but it doesn’t work… 
I really thank you for your help ! 