lidt

[Error] 
Cannot instantiate abstract class Bitrix\Iblock\Component\Base (0)
/home/itportal/web/itportal.ru/public_html/bitrix/modules/main/classes/general/component.php:623
#0: CBitrixComponent->includeComponent
	/home/itportal/web/itportal.ru/public_html/bitrix/modules/main/classes/general/main.php:1037
#1: CAllMain->IncludeComponent
	/home/itportal/web/itportal.ru/public_html/science/archive/list.php:97