[TypeError] 
call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method MKSpecial::OnPageStartSpecial() cannot be called statically (0)
/home/hmg3807811/hmgaz.ru/docs/bitrix/modules/main/classes/general/module.php:480
#0: ExecuteModuleEventEx(array)
	/home/hmg3807811/hmgaz.ru/docs/bitrix/modules/main/include.php:173
#1: require_once(string)
	/home/hmg3807811/hmgaz.ru/docs/bitrix/modules/main/include/prolog_before.php:14
#2: require_once(string)
	/home/hmg3807811/hmgaz.ru/docs/bitrix/modules/main/include/prolog.php:10
#3: require_once(string)
	/home/hmg3807811/hmgaz.ru/docs/bitrix/header.php:1
#4: require(string)
	/home/hmg3807811/hmgaz.ru/docs/hmg/services/yuredicheskim_persons.php:2
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