Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Definition" not found in /home/authent1/public_html/listassorys/phpbb/vendor/symfony/dependency-injection/ChildDefinition.php:23 Stack trace: #0 {main} thrown in /home/authent1/public_html/listassorys/phpbb/vendor/symfony/dependency-injection/ChildDefinition.php on line 23