Fatal error: Uncaught Error: Class 'Symfony\Contracts\EventDispatcher\Event' not found in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\form\FormEvent.php:19
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\form\FormEvent.php on line 19