I had issues getting this working and kept getting the 404 issue.
I deleted .js files in assets and had no luck.
Disabling and re-enabling third-party extensions did allow the login to finally redirect to github.
However I am now faced with an error once a user tries to authorize login:
InvalidArgumentException
HELP
Required option not passed: "access_token"
From: $WEBROOT/vendor/league/oauth2-client/src/Token/AccessToken.php
Application points to Line 58:
InvalidArgumentException
…/vendor/league/oauth2-client/src/Token/AccessToken.php58
throw new InvalidArgumentException('Required option not passed: "access_token"');
Any helpful advice?
Thank you in advance! ?