Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\FileLoader" not found in /users/energydata/www/volkszaehler.org/vendor/symfony/routing/Loader/XmlFileLoader.php:28 Stack trace: #0 {main} thrown in /users/energydata/www/volkszaehler.org/vendor/symfony/routing/Loader/XmlFileLoader.php on line 28