Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Loader\Configurator\AbstractConfigurator" not found in /var/www/html/vendor/symfony/dependency-injection/Loader/Configurator/ContainerConfigurator.php:28 Stack trace: #0 {main} thrown in /var/www/html/vendor/symfony/dependency-injection/Loader/Configurator/ContainerConfigurator.php on line 28