Fatal error: Uncaught Error: Class 'Facebook\FacebookSession' not found in /home/uq39o290/public_html/controller/UserController.php:50 Stack trace: #0 /home/uq39o290/public_html/index.php(38): include_once() #1 {main} thrown in /home/uq39o290/public_html/controller/UserController.php on line 50