Fatal error: Uncaught Error: Class "Facebook\GraphNodes\GraphNodeFactory" not found in /opt/app-root/src/wp-content/plugins/xyz-wp-smap/api/Facebook/GraphNodes/GraphObjectFactory.php:36 Stack trace: #0 {main} thrown in /opt/app-root/src/wp-content/plugins/xyz-wp-smap/api/Facebook/GraphNodes/GraphObjectFactory.php on line 36