Fatal error: Uncaught Error: Interface "Psr\EventDispatcher\StoppableEventInterface" not found in C:\xampp\htdocs\adminlte3\vendor\symfony\event-dispatcher-contracts 2\Event.php:31
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\adminlte3\vendor\symfony\event-dispatcher-contracts 2\Event.php on line 31