Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\ContainerBuilder' not found in /home/www/public_html/admin/shared/codeigniter/vendor/symfony/dependency-injection/Tests/Fixtures/containers/container21.php:6 Stack trace: #0 {main} thrown in /home/www/public_html/admin/shared/codeigniter/vendor/symfony/dependency-injection/Tests/Fixtures/containers/container21.php on line 6