Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in D:\Apache24\www\qilu_sap\back-end\vendor\symfony\http-kernel\Bundle\BundleExtension.php:28 Stack trace: #0 {main} thrown in D:\Apache24\www\qilu_sap\back-end\vendor\symfony\http-kernel\Bundle\BundleExtension.php on line 28