Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in /var/www/crm_killing_ninja/vendor/league/flysystem-bundle/src/DependencyInjection/FlysystemExtension.php:31 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/league/flysystem-bundle/src/DependencyInjection/FlysystemExtension.php on line 31