I think I’m doing something wrong, I don’t really understand it. Is there a step-by-step guide? OAuth worked fine for Google services, but not with this Spotify setup. My steps:
Run node first_auth.js as in the MMM-Spotify instructions → Terminal shows “[SPOTIFY] Initialized”.
Browser opens with Spotify login, I enter my account, Spotify asks for access. → Still no code in terminal.
After clicking accept, browser redirects to localhost:8888 with ?code=**** in the URL.
But then an error pops up immediately in the terminal, before I can do anything with the code. At which step am I supposed to use this code, and where should I put it?