Fatal error: Uncaught Error: Interface "Facebook\PersistentData\PersistentDataInterface" not found in /home/supercheats/public_html/php/facebook/php-graph-sdk-5.0.0/src/Facebook/PersistentData/FacebookMemoryPersistentDataHandler.php:31 Stack trace: #0 {main} thrown in /home/supercheats/public_html/php/facebook/php-graph-sdk-5.0.0/src/Facebook/PersistentData/FacebookMemoryPersistentDataHandler.php on line 31