[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`iblock_iblock_site`.`IBLOCK_ID` AS `IBLOCK_ID`
FROM `b_iblock_site` `iblock_iblock_site` 
LEFT JOIN `b_iblock` `iblock_iblock_site_iblock` ON `iblock_iblock_site`.`IBLOCK_ID` = `iblock_iblock_site_iblock`.`ID`
WHERE `iblock_iblock_site`.`IBLOCK_ID` = 6
AND `iblock_iblock_site`.`SITE_ID` = 'u2'
AND `iblock_iblock_site_iblock`.`ACTIVE` = 'Y'
/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/lib/entity/query.php:3038
#2: Bitrix\Main\Entity\Query->query(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/lib/entity/query.php:797
#3: Bitrix\Main\Entity\Query->exec()
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/lib/entity/datamanager.php:290
#4: Bitrix\Main\Entity\DataManager::getList(array)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/components/bitrix/catalog.section.list/component.php:52
#5: include(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component.php:594
#6: CBitrixComponent->__includeComponent()
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component.php:653
#7: CBitrixComponent->includeComponent(string, array, boolean)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/main.php:1037
#8: CAllMain->IncludeComponent(string, string, array, boolean)
	/var/www/erobitrix/data/www/svetvip.ru/include/sections.php:21
#9: include(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/components/bitrix/main.include/templates/.default/template.php:17
#10: include(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component_template.php:720
#11: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component_template.php:815
#12: CBitrixComponentTemplate->IncludeTemplate(array)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component.php:735
#13: CBitrixComponent->showComponentTemplate()
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component.php:683
#14: CBitrixComponent->includeComponentTemplate()
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/components/bitrix/main.include/component.php:280
#15: include(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component.php:594
#16: CBitrixComponent->__includeComponent()
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/component.php:653
#17: CBitrixComponent->includeComponent(string, array, boolean)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/classes/general/main.php:1037
#18: CAllMain->IncludeComponent(string, string, array, boolean)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/templates/elektro_flat_copy/header.php:139
#19: include_once(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/include/prolog_after.php:96
#20: require(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/include/prolog.php:11
#21: require_once(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/header.php:1
#22: require(string)
	/var/www/erobitrix/data/www/svetvip.ru/catalog/index.php:1
#23: include_once(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/modules/main/include/urlrewrite.php:159
#24: include_once(string)
	/var/www/erobitrix/data/www/svetvip.ru/bitrix/urlrewrite.php:2