Fatal error: Uncaught Facebook\Exceptions\FacebookSDKException: Required "app_id" key not supplied in config and could not find fallback environment variable "FACEBOOK_APP_ID" in /srv/users/livtoolscom/apps/livtoolscom/public/core/library/facebook/Facebook.php:139 Stack trace: #0 /srv/users/livtoolscom/apps/livtoolscom/public/core/controllers/facebook.php(38): Facebook\Facebook->__construct() #1 /srv/users/livtoolscom/apps/livtoolscom/public/core/app.php(162): require('...') #2 /srv/users/livtoolscom/apps/livtoolscom/public/index.php(25): require('...') #3 {main} thrown in /srv/users/livtoolscom/apps/livtoolscom/public/core/library/facebook/Facebook.php on line 139