Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Dumper\Dumper" not found in /home/authent1/public_html/listassorys/phpbb/vendor/symfony/dependency-injection/Dumper/YamlDumper.php:35 Stack trace: #0 {main} thrown in /home/authent1/public_html/listassorys/phpbb/vendor/symfony/dependency-injection/Dumper/YamlDumper.php on line 35