Plugin addEnchantment() Error

Hi,
I have a problem with addEnchantment.
If I add the Item to the players inventory without an Enchantment it works...

The Code:

PHP:

$killer->getInventory()->setItem(0, Item::get(271, 0, 1)->addEnchantment(Enchantment::getEnchantment(12)->setLevel(1)));


Error:

Code:

Argument 2 passed to pocketmine\inventory
\PlayerInventory::setItem() must be an instance of pock
etmine\item\Item, null given

I hope someone could help me

 

addEnchantment does not return the item object.
It just modifies the object.

PHP:

$item = Item::get(271, 0, 1);
$item->addEnchantment(Enchantment::getEnchantment(12)->setLevel(1));
$killer->getInventory()->setItem(0, $item);


 

Thanks. Now it works!