Authorization Flow Doesn't Work

[bndnio]

When attempting to setup a new project with Spotify authentication, I'm running into the following issue upon completing the Spotify authorization.

This has been reproduced with the code example from this repo.

Webpage:

Console:

Network Tab:

Steps to reproduce:

• Clone this repository
• yarn to install dependencies
• cd to web-api-examples/authentication/authorization_code
• populate client_id, client_secret, redirect_uri, with your project specific values
• node app.js
• visit web page (localhost:8888)
• click "login with Spotify"
• authorize using your account
• -- land on error page --

It strikes me as very curious why the Spotify code is redirecting to https://accounts.spotify.com/{2}

I'm running on a 2022 M2 Macbook Air, macOS 13.0, with node v20.1.0, and yarn v1.22.19

[bndnio]

Figured out the problem! My redirect URI didn't have a protocol on it (both in my code & in the Spotify dev console).

localhost:3000/account is invalid.
Changing it to http://localhost:3000/account resolves the issue.

If at all possible, it would be helpful to receive an error code explaining the problem instead of an html page describing a generic error, or validation in the Spotify developer console.

Hopefully this is helpful for someone else in the future searching for this issue :)