Solved stdClass() error

hello, I have an error that tells me "Undefined property: stdClass::$entityRuntimeId "
but I dont know how to solve this problem.

PHP:

 /**
     * @param DataPacketReceiveEvent $event
     * @return bool
     */
    public function onPacketReceived(DataPacketReceiveEvent $event)
    {
        $pk = $event->getPacket();

        if ($pk instanceof InventoryTransactionPacket) {

            (isset($this->entity[$pk->trData->entityRuntimeId])){
            $citizen = $this->entity[$pk->trData->entityRuntimeId];

            if (!isset($this->command[$event->getPlayer()->getName()])) {
                $citizen->commandExecute($event->getPlayer());
                return true;
            }
        }
    }
    }

 

The error answers your question.
According to https://github.com/pmmp/PocketMine-.../mcpe/protocol/InventoryTransactionPacket.php, InventoryTransactionPacket::$trData->entityRuntimeId is set only if InventoryTransactionPacket::$transactionType returns InventoryTransactionPacket::TYPE_USE_ITEM_ON_ENTITY. So you'll need to check that before calling trData->entityRuntimeId.

 

Solved Thanks you.