Fatal error: Uncaught exception 'Facebook\FacebookSDKException' with message 'You must provide or set a default application secret.' in /home2/aikka.com.my/public_html/Facebook/FacebookSession.php:340 Stack trace: #0 /home2/aikka.com.my/public_html/Facebook/FacebookRedirectLoginHelper.php(76): Facebook\FacebookSession::_getTargetAppSecret(NULL) #1 /home2/aikka.com.my/public_html/catalog/controller/account/facebook.php(56): Facebook\FacebookRedirectLoginHelper->__construct('http://www.aikk...') #2 [internal function]: ControllerAccountFacebook->index() #3 /home2/aikka.com.my/public_html/system/storage/modification/system/engine/action.php(51): call_user_func_array(Array, Array) #4 /home2/aikka.com.my/public_html/catalog/controller/startup/router.php(25): Action->execute(Object(Registry)) #5 [internal function]: ControllerStartupRouter->index() #6 /home2/aikka.com.my/public_html/system/storage/modification/system/engine/action.php(51): call_user_func_array(Array, Array) #7 /home2/aikka.com.my/public_html/system/engine/front in /home2/aikka.com.my/public_html/Facebook/FacebookSession.php on line 340