[TypeError] 
Argument 2 passed to Bitrix\Sale\BasketItemCollection::getExistsItems() must be of the type int, null given, called in /home/m/multidveri/multidveri.ru/public_html/bitrix/modules/sale/lib/basketitemcollection.php on line 312 (0)
/home/m/multidveri/multidveri.ru/public_html/bitrix/modules/sale/lib/basketitemcollection.php:190
#0: Bitrix\Sale\BasketItemCollection->getExistsItems(string, NULL, array)
	/home/m/multidveri/multidveri.ru/public_html/bitrix/modules/sale/lib/basketitemcollection.php:312
#1: Bitrix\Sale\BasketItemCollection->getExistsItem(string, NULL, array)
	/home/m/multidveri/multidveri.ru/public_html/bitrix/modules/sale/lib/compatible/basketcompatibility.php:544
#2: Bitrix\Sale\Compatible\BasketCompatibility::add(array)
	/home/m/multidveri/multidveri.ru/public_html/bitrix/modules/sale/mysql/basket.php:476
#3: CSaleBasket::Add(array)
	/home/m/multidveri/multidveri.ru/public_html/ajax/addbasket_delay.php:28
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