[Error] 
Class 'CIBlockSection' not found (0)
/www/zi/vendor/language/Language.php:756
#0: vendor\language\Language::getSectionCodes(integer, string, string)
	/www/zi/vendor/language/Language.php:652
#1: vendor\language\Language->getHeaderDNLDNURL(string, string)
	/www/s2.dnl.dn.ua/local/components/dnl/lang.switch/component.php:17
#2: include(string)
	/www/zi/bitrix/modules/main/classes/general/component.php:605
#3: CBitrixComponent->__includeComponent()
	/www/zi/bitrix/modules/main/classes/general/component.php:680
#4: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/www/zi/bitrix/modules/main/classes/general/main.php:1041
#5: CAllMain->IncludeComponent(string, string, array, boolean, array)
	/www/s2.dnl.dn.ua/local/templates/dnl_dn_ua/header.php:161
#6: include_once(string)
	/www/zi/bitrix/modules/main/include/prolog_after.php:106
#7: require(string)
	/www/zi/bitrix/modules/main/include/prolog.php:11
#8: require_once(string)
	/www/zi/bitrix/header.php:1
#9: require(string)
	/www/s2.dnl.dn.ua/obyavleniya/section.php:1
#10: include_once(string)
	/www/zi/bitrix/modules/main/include/urlrewrite.php:159
#11: include_once(string)
	/www/zi/bitrix/urlrewrite.php:2