400 Bad Request; The 'redirect_uri' parameter must be an absolute URI

During authorize request of implicit or authorization code flow (Open ID or OAuth), following error is returned.

http://https://support.okta.com/help/s/article/The-redirect-uri-parameter-must-be-an-absolute-URI

The suggested link did not resolve my issue. I believe the issue is something with the redirect uri being outdated? Do you have the updated uri?

Mine is: redirect_uri: 'http://localhost:3000/users/callback',