Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Container" not found in /home/tubu/public_html/Opigno_D9_kedecs/opigno-composer/vendor/symfony/dependency-injection/ContainerBuilder.php:52 Stack trace: #0 {main} thrown in /home/tubu/public_html/Opigno_D9_kedecs/opigno-composer/vendor/symfony/dependency-injection/ContainerBuilder.php on line 52