[Error] 
Class 'Bitrix\Landing\Update\Domain\Check' not found (0)
/srv/www/lng_ru2016/bitrix/modules/main/classes/mysql/agent.php(162) : eval()'d code:1
#0: eval
	/srv/www/lng_ru2016/bitrix/modules/main/classes/mysql/agent.php:162
#1: CAgent::ExecuteAgents(string)
	/srv/www/lng_ru2016/bitrix/modules/main/classes/mysql/agent.php:40
#2: CAgent::CheckAgents()
	/srv/www/lng_ru2016/bitrix/modules/main/include.php:271
#3: require_once(string)
	/srv/www/lng_ru2016/bitrix/modules/main/include/prolog_before.php:14
#4: require_once(string)
	/srv/www/lng_ru2016/bitrix/modules/main/include/prolog.php:10
#5: require_once(string)
	/srv/www/lng_ru2016/bitrix/header.php:1
#6: require(string)
	/srv/www/lng_ru2016/science/konferentsii-i-seminary/index.php:2