[Error] 
Call to a member function GetUserGroupArray() on null (0)
/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/main/classes/general/main.php:3696
#0: CAllSite::InGroup(array)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/catalog/mysql/discount.php:189
#1: CCatalogDiscount::GetList(array, array, boolean, boolean, array)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/vettich.autoposting/lib/posting.php:182
#2: Vettich\Autoposting\Posting::ElementPost(array, string, array)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/vettich.autoposting/lib/posting.php:21
#3: Vettich\Autoposting\Posting::OnPageStart()
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/main/classes/general/module.php:490
#4: ExecuteModuleEventEx(array)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/main/include.php:266
#5: require_once(string)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/main/include/prolog_before.php:14
#6: require_once(string)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/main/include/prolog.php:10
#7: require_once(string)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/header.php:1
#8: require(string)
	/home/bitrix/ext_www/shop.cafebijoux.ru/catalog/index.php:2
#9: include_once(string)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/modules/main/include/urlrewrite.php:159
#10: include_once(string)
	/home/bitrix/ext_www/shop.cafebijoux.ru/bitrix/urlrewrite.php:2