Fatal error: Uncaught Error: Class "League\OAuth2\Server\Grant\AbstractGrant" not found in /home/iunowfun/public_html/Webpanel2.3/app/Grants/FacebookGrant.php:24 Stack trace: #0 {main} thrown in /home/iunowfun/public_html/Webpanel2.3/app/Grants/FacebookGrant.php on line 24