Fatal error: Uncaught Error: Interface "Symfony\Contracts\Service\ServiceSubscriberInterface" not found in /usr/www/amatsuro/classicro.net/m1ghty1/vendor/symfony/dependency-injection/ServiceSubscriberInterface.php:21 Stack trace: #0 {main} thrown in /usr/www/amatsuro/classicro.net/m1ghty1/vendor/symfony/dependency-injection/ServiceSubscriberInterface.php on line 21