[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`main_group`.`ID` AS `ID`
FROM `b_group` `main_group` 

WHERE `main_group`.`ANONYMOUS` = 'Y'
AND `main_group`.`ACTIVE` = 'Y'
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3357
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:825
#3: Bitrix\Main\ORM\Query\Query->exec()
	/home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php:500
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/home/bitrix/www/bitrix/modules/main/lib/user.php:317
#5: Bitrix\Main\UserTable::getUserGroupIds(integer)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:2367
#6: CProductQueryBuilder::getUserGroups(integer)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:2176
#7: CProductQueryBuilder::getPriceTypeAccess(array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:2146
#8: CProductQueryBuilder::selectPriceTypeAllowedView(array, array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1507
#9: CProductQueryBuilder::getField(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1868
#10: CProductQueryBuilder::buildSelect(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1831
#11: CProductQueryBuilder::build(array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1768
#12: CProductQueryBuilder::prepareQuery(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:52
#13: CProductQueryBuilder::makeFilter(array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:1289
#14: CAllIBlockElement->MkFilter(array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:3095
#15: CAllIBlockElement->PrepareGetList(array, array, array, string, array, array, NULL, NULL, array, array, string, array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/mysql/iblockelement.php:343
#16: CIBlockElement->prepareSql(array, array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/mysql/iblockelement.php:666
#17: CIBlockElement::GetList(array, array, array)
	/home/bitrix/ext_www/s2/local/components/bitrix/catalog.section.list/component.php:332
#18: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#19: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#20: CBitrixComponent->includeComponent(string, array, object, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#21: CAllMain->IncludeComponent(string, string, array, object, array)
	/home/bitrix/www/bitrix/templates/magnet_s2/components/bitrix/catalog/main/section.php:237
#22: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:789
#23: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:884
#24: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:764
#25: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:712
#26: CBitrixComponent->includeComponentTemplate(string)
	/home/bitrix/www/bitrix/components/bitrix/catalog/component.php:171
#27: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#28: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#29: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#30: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/ext_www/s2/index.php:782
#31: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#32: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2