Fatal error: Uncaught Error: Undefined class constant 'GRAPH_API_VERSION' in /www/wwwroot/megamonglobal.gameshyped.com/api/login/src/Facebook/FacebookRedirectLoginHelper.php:93 Stack trace: #0 /www/wwwroot/megamonglobal.gameshyped.com/api/login/fbconfig.php(65): Facebook\FacebookRedirectLoginHelper->getLoginUrl() #1 {main} thrown in /www/wwwroot/megamonglobal.gameshyped.com/api/login/src/Facebook/FacebookRedirectLoginHelper.php on line 93