[Error] 
Cannot instantiate abstract class Bitrix\Iblock\Component\Base (0)
/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/component.php:623
#0: CBitrixComponent->includeComponent(string, array, object)
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/main.php:1037
#1: CAllMain->IncludeComponent(string, string, array, object)
	/home/sitara_web/ru.sitara.com/local/templates/sitaraNew/components/bitrix/catalog/about/element.php:3
#2: include(string)
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/component_template.php:720
#3: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/component_template.php:815
#4: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/component.php:735
#5: CBitrixComponent->showComponentTemplate()
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/component.php:683
#6: CBitrixComponent->includeComponentTemplate(string)
	/home/sitara_web/ru.sitara.com/bitrix/components/bitrix/catalog/component.php:171
#7: include(string)
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/component.php:594
#8: CBitrixComponent->__includeComponent()
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/component.php:653
#9: CBitrixComponent->includeComponent(string, array, boolean)
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/classes/general/main.php:1037
#10: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/sitara_web/ru.sitara.com/about/index.php:116
#11: include_once(string)
	/home/sitara_web/ru.sitara.com/bitrix/modules/main/include/urlrewrite.php:159
#12: include_once(string)
	/home/sitara_web/ru.sitara.com/bitrix/urlrewrite.php:2