[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`catalog_group`.`ID` AS `ID`,
	`catalog_group`.`NAME` AS `NAME`,
	`catalog_group`.`BASE` AS `BASE`,
	`catalog_group`.`SORT` AS `SORT`,
	`catalog_group`.`XML_ID` AS `XML_ID`,
	`catalog_group_current_lang`.`NAME` AS `NAME_LANG`,
	`catalog_group_current_lang`.`ID` AS `UALIAS_0`
FROM `b_catalog_group` `catalog_group` 
LEFT JOIN `b_catalog_group_lang` `catalog_group_current_lang` ON `catalog_group`.`ID` = `catalog_group_current_lang`.`CATALOG_GROUP_ID`
AND `catalog_group_current_lang`.`LANG` = 'ru'
ORDER BY `SORT` ASC, `ID` ASC
/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/catalog/general/cataloggroup.php:290
#5: CAllCatalogGroup::GetListArray()
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:2117
#6: CProductQueryBuilder::selectPriceTypeName(array, array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1507
#7: CProductQueryBuilder::getField(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1868
#8: CProductQueryBuilder::buildSelect(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1831
#9: CProductQueryBuilder::build(array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:1768
#10: CProductQueryBuilder::prepareQuery(array, array)
	/home/bitrix/www/bitrix/modules/catalog/general/querybuilder.php:52
#11: CProductQueryBuilder::makeFilter(array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:1289
#12: CAllIBlockElement->MkFilter(array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:3095
#13: 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
#14: CIBlockElement->prepareSql(array, array, array, array)
	/home/bitrix/www/bitrix/modules/iblock/classes/mysql/iblockelement.php:666
#15: CIBlockElement::GetList(array, array, array)
	/home/bitrix/ext_www/s2/local/components/bitrix/catalog.section.list/component.php:332
#16: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#17: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#18: CBitrixComponent->includeComponent(string, array, object, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#19: CAllMain->IncludeComponent(string, string, array, object, array)
	/home/bitrix/www/bitrix/templates/magnet_s2/components/bitrix/catalog/main/section.php:237
#20: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:789
#21: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:884
#22: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:764
#23: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:712
#24: CBitrixComponent->includeComponentTemplate(string)
	/home/bitrix/www/bitrix/components/bitrix/catalog/component.php:171
#25: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#26: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#27: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#28: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/ext_www/s2/index.php:782
#29: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#30: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2