Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Definition" not found in /usr/www/amatsuro/classicro.net/m1ghty1/vendor/symfony/dependency-injection/ChildDefinition.php:23 Stack trace: #0 {main} thrown in /usr/www/amatsuro/classicro.net/m1ghty1/vendor/symfony/dependency-injection/ChildDefinition.php on line 23