[Error] 
Non-static method CMainPage::GetSiteByHost() cannot be called statically (0)
/home/g/galexit/itforumaltai.ru/public_html/bitrix/modules/bitrix.conf/classes/general/conference.php:263
#0: CConference::hasActiveConf()
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/components/bitrix/conf.preview/component.php:244
#1: include(string)
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/modules/main/classes/general/component.php:607
#2: CBitrixComponent->__includeComponent()
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/modules/main/classes/general/component.php:684
#3: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/modules/main/classes/general/main.php:1062
#4: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/templates/tmp_s1_2018_adaptive/header.php:187
#5: include_once(string)
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/modules/main/include/prolog_after.php:106
#6: require(string)
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/modules/main/include/prolog.php:11
#7: require_once(string)
	/home/g/galexit/itforumaltai.ru/public_html/bitrix/header.php:1
#8: require(string)
	/home/g/galexit/itforumaltai.ru/public_html/2018/agenda/speakers_list/index.php:2
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