@sdetweil
Following address is opened in browser: https://accounts.spotify.com/de/authorize?response_type=code&client_id=XXXXX&scope=user…
-> Press Agree button in Browser in order to agree access to spotify
Afterwards address in browser is changed to:
http://localhost:8888/callback?code=XXXXX&state=XXXXX…
I assume the code (anonymized XXXXX) in this address is the relevant one. But how to proceed with that? Because at the time I have received this code I already have the errors in my terminal window.