How to fix authorization error with Google's OAuth2?

Question

Google

When authorizing through google, an error 400 occurs: Invalid parameter value for redirect_uri: Missing scheme: http%3A%2F%2F127.0.0.1%3A1337%2Fapi%2Foauth2callback
In the credentials to the client, I registered an allowed callback uri.

Answer 1

Something some suspicious error message. It's as if the redirect_uri parameter you're passing in is being URL-encoded twice. It is unlikely that a Google service gives an error message so crookedly.