Problem with retrieving Access Token URL for spotify API

[GabrieleToffanin]

Hey , i'm trying to use spotify-api with nightingale , i'm following the OAuth2.0 authorization workflow but i got stuck in a problem , i'm inserting my CliendID and Client Secret, but nightingale is asking me for the AccessToken URL that i can't really understeand how to get . I wrote down a little js script who retrieves me automatically this Access Token URL by passing and url like

https://accounts.spotify.com/authorize?client_id=3cdb16d5e6fa48c2a8f3089616fbc373&response_type=code&redirect_uri=

where in
redirect_uri=

i put something like
https://localhost:3000

then with an hook function i get the Access Token URL But how may i get manually the latter one ?