Fatal error: Uncaught Error: Interface 'Facebook\HttpClients\FacebookHttpClientInterface' not found in /var/www/html/yourfaithfully/vendor/facebook/graph-sdk/src/Facebook/HttpClients/FacebookGuzzleHttpClient.php:34 Stack trace: #0 {main} thrown in /var/www/html/yourfaithfully/vendor/facebook/graph-sdk/src/Facebook/HttpClients/FacebookGuzzleHttpClient.php on line 34