Fatal error: Uncaught exception 'Facebook\Exceptions\FacebookSDKException' with message 'Sessions are not active. Please make sure session_start() is at the top of your script.' in /var/www/clients/client2/site6/web/scripts/Facebook/PersistentData/FacebookSessionPersistentDataHandler.php:50 Stack trace: #0 /var/www/clients/client2/site6/web/scripts/Facebook/Helpers/FacebookRedirectLoginHelper.php(80): Facebook\PersistentData\FacebookSessionPersistentDataHandler->__construct() #1 /var/www/clients/client2/site6/web/scripts/Facebook/Facebook.php(323): Facebook\Helpers\FacebookRedirectLoginHelper->__construct(Object(Facebook\Authentication\OAuth2Client), NULL, NULL, NULL) #2 /var/www/clients/client2/site6/web/includes/modules/user/views/login.class.php(46): Facebook\Facebook->getRedirectLoginHelper() #3 /var/www/clients/client2/site6/web/includes/modules/user/views/login.class.php(21): LoginView->getLoginForm() #4 /var/www/clients/client2/site6/web/includes/modules/user/views/login.class.php(12): LoginView->getLogin() #5 /var in /var/www/clients/client2/site6/web/scripts/Facebook/PersistentData/FacebookSessionPersistentDataHandler.php on line 50