Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Extension\Extension' not found in /mnt/volume_lon1_01/backend/adminseppi/vendor/symfony/http-kernel/DependencyInjection/Extension.php:21
Stack trace:
#0 {main}
thrown in /mnt/volume_lon1_01/backend/adminseppi/vendor/symfony/http-kernel/DependencyInjection/Extension.php on line 21