Fatal error: Uncaught Error: Class 'Facebook\FacebookRequest' not found in /var/www/html/yourfaithfully/vendor/facebook/graph-sdk/src/Facebook/FacebookBatchRequest.php:37 Stack trace: #0 {main} thrown in /var/www/html/yourfaithfully/vendor/facebook/graph-sdk/src/Facebook/FacebookBatchRequest.php on line 37