Fatal error: Uncaught Error: Class "Facebook\Helpers\FacebookCanvasHelper" not found in /mnt/VenusReview/review/lyrasoft/dva/pr-2436/vendor/facebook/graph-sdk/src/Facebook/Helpers/FacebookPageTabHelper.php:34
Stack trace:
#0 {main}
thrown in /mnt/VenusReview/review/lyrasoft/dva/pr-2436/vendor/facebook/graph-sdk/src/Facebook/Helpers/FacebookPageTabHelper.php on line 34