Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Event\KernelEvent' not found in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\Event\ControllerEvent.php:28
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\Event\ControllerEvent.php on line 28