Dumplie\Customer\Application\Exception\QueryException::cartItemNotFound PHP Method

    public static function cartItemNotFound($sku) : QueryException
    {
        return new self(sprintf("Cart item with SKY \"%s\" does not exists.", $sku));
    }

 /**
  * @param string $sku
  * @param int    $quantity
  *
  * @return CartItem
  * @throws QueryException
  */
 private function getItemBySku(string $sku, int $quantity) : CartItem
 {
     $qb = $this->connection->createQueryBuilder();
     $qb->select('*')->from('dumplie_inventory_product')->where('sku = :sku')->setParameter('sku', $sku);
     $itemData = $this->connection->fetchAssoc($qb->getSQL(), $qb->getParameters());
     if (empty($itemData)) {
         throw QueryException::cartItemNotFound($sku);
     }
     return new CartItem($itemData['sku'], $quantity, $itemData['price_amount'] / $itemData['price_precision'], $itemData['price_currency'], $this->mao->getBy([Metadata::FIELD_SKU => $itemData['sku']]));
 }