Get player in InventoryTransactionEvent

Because the code, I got from the people from the first thread was called on null, so I am reopening this thread. So how I do that?

PHP:

public function TapItemsInChest(InventoryTransactionEvent $event){
        foreach($event->getTransaction()->getTransactions() as $t){
            $inv = $t->getInventory();
            if($inv instanceof PlayerInventory){
                $player = $inv->getHolder();
            }elseif($inv instanceof ChestInventory){
                $chest = $inv->getHolder();
            }
        }
    }


Does it really work on your plugin? Because as I did it, it said Player on null... Thats why I reopened this thread, see, or is it that I am to stupid to script? :/ https://forums.pocketmine.net/threads/how-to-get-the-player-on-inventorytransactionevent.14003/

It worked, thanks