Fatal error: Uncaught exception 'Facebook\Exceptions\FacebookSDKException' with message 'Required "app_id" key not supplied in config and could not find fallback environment variable "FACEBOOK_APP_ID"' in /www/htdocs/w013e385/magnamultimedia.de/core/library/facebook/Facebook.php:139 Stack trace: #0 /www/htdocs/w013e385/magnamultimedia.de/core/controllers/facebook.php(39): Facebook\Facebook->__construct(Array) #1 /www/htdocs/w013e385/magnamultimedia.de/core/app.php(141): require('/www/htdocs/w01...') #2 /www/htdocs/w013e385/magnamultimedia.de/index.php(25): require('/www/htdocs/w01...') #3 {main} thrown in /www/htdocs/w013e385/magnamultimedia.de/core/library/facebook/Facebook.php on line 139