Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/u6668910/public_html/lab/src/Admin/AdminPanelBundle/DependencyInjection/AdminAdminPanelExtension.php:15 Stack trace: #0 {main} thrown in /home/u6668910/public_html/lab/src/Admin/AdminPanelBundle/DependencyInjection/AdminAdminPanelExtension.php on line 15