Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Event\KernelEvent' not found in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\Event\RequestEvent.php:25
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\admin\vendor\symfony\http-kernel\Event\RequestEvent.php on line 25