[Error] 
Class 'Loader' not found (0)
/home/bitrix/ext_www/energyplus.su/bitrix/modules/sale/include.php:23
#0: include_once
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/lib/loader.php:115
#1: Bitrix\Main\Loader::includeModuleInternal(string)
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/lib/loader.php:102
#2: Bitrix\Main\Loader::includeModule(string)
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/classes/general/module.php:261
#3: CModule::IncludeModule(string)
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/classes/mysql/agent.php:147
#4: CAgent::ExecuteAgents(string)
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/classes/mysql/agent.php:40
#5: CAgent::CheckAgents()
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/include.php:267
#6: require_once(string)
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/include/prolog_before.php:14
#7: require_once(string)
	/home/bitrix/ext_www/energyplus.su/bitrix/modules/main/include/prolog.php:10
#8: require_once(string)
	/home/bitrix/ext_www/energyplus.su/bitrix/header.php:1
#9: require(string)
	/home/bitrix/ext_www/energyplus.su/index.php:3