Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\KernelEvent" not found in C:\xampp\htdocs\adminlte3\vendor\symfony\http-kernel\Event 2\FinishRequestEvent.php:19
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\adminlte3\vendor\symfony\http-kernel\Event 2\FinishRequestEvent.php on line 19