Fatal error: Uncaught Error: Interface "GrahamCampbell\GitHub\Auth\Authenticator\AuthenticatorInterface" not found in C:\xampp\htdocs\vendor\graham-campbell\github\src\Auth\Authenticator\AbstractAuthenticator.php:24 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\graham-campbell\github\src\Auth\Authenticator\AbstractAuthenticator.php on line 24