[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/iblock/classes/general/comp_pricetools.php:43
#6: CIBlockPriceTools::GetCatalogPrices(integer, array)
	/home/bitrix/www/bitrix/components/nextype/magnet.smart.filter/component.php:26
#7: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#8: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:103
#9: CBitrixComponent->executeComponent()
	/home/bitrix/www/bitrix/components/nextype/magnet.smart.filter/class.php:136
#10: CBitrixCatalogSmartFilter->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:656
#11: CBitrixComponent->includeComponent(string, array, object, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#12: CAllMain->IncludeComponent(string, string, array, object, array)
	/home/bitrix/www/bitrix/templates/magnet_s2/components/nextype/magnet.landing/main/page_blocks/products.php:139
#13: include(string)
	/home/bitrix/www/bitrix/templates/magnet_s2/components/nextype/magnet.landing/main/template.php:10
#14: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:789
#15: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:884
#16: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:764
#17: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:712
#18: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/www/bitrix/components/nextype/magnet.landing/component.php:167
#19: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#20: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#21: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#22: CAllMain->IncludeComponent(string, string, array, boolean, array)
	/home/bitrix/ext_www/s2/include/components/landing.php:77
#23: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#24: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2