First I hade problem using spotifys API since GPT said it was different roots which led me to temporary use a URL-shortener. When successful the link said CLIENT ID MISSING which led me to include that value in the “Authorization URL” as such:
Now it returns OAUTH INVALID OR MISSING.
I believe I should just be able to put Login - Spotify in authorization. And GPT should put together the rest.
The state value should be passed automatically in API-call? Where is the error?