Fatal error: Uncaught Error: Class "League\OAuth2\Client\Provider\AbstractProvider" not found in /home/bimmertest/BookStack/app/Access/Oidc/OidcOAuthProvider.php:19 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/app/Access/Oidc/OidcOAuthProvider.php on line 19