Fatal error: Uncaught Error: Class "Facebook\Helpers\FacebookSignedRequestFromInputHelper" not found in /home/deafxky6/deafswipe.com/application/libraries/authentication/facebook/Helpers/FacebookCanvasHelper.php:31 Stack trace: #0 {main} thrown in /home/deafxky6/deafswipe.com/application/libraries/authentication/facebook/Helpers/FacebookCanvasHelper.php on line 31