[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: MySQL server has gone away (400)
SELECT 
	`catalog_catalog_iblock`.`IBLOCK_ID` AS `IBLOCK_ID`,
	`catalog_catalog_iblock`.`PRODUCT_IBLOCK_ID` AS `PRODUCT_IBLOCK_ID`,
	`catalog_catalog_iblock`.`SKU_PROPERTY_ID` AS `SKU_PROPERTY_ID`,
	`catalog_catalog_iblock_iblock`.`VERSION` AS `VERSION`
FROM `b_catalog_iblock` `catalog_catalog_iblock` 
INNER JOIN `b_iblock` `catalog_catalog_iblock_iblock` ON `catalog_catalog_iblock`.`IBLOCK_ID` = `catalog_catalog_iblock_iblock`.`ID`
WHERE `catalog_catalog_iblock`.`PRODUCT_IBLOCK_ID` = 12
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:116
#0: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/entity/query.php:1924
#2: Bitrix\Main\Entity\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/entity/query.php:505
#3: Bitrix\Main\Entity\Query->exec()
	/home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php:256
#4: Bitrix\Main\Entity\DataManager::getList(array)
	/home/bitrix/www/bitrix/modules/catalog/general/catalog_sku.php:144
#5: CAllCatalogSku::GetInfoByProductIBlock(integer)
	/home/bitrix/www/bitrix/templates/dresscode/components/bitrix/menu/leftMenu2/result_modifier.php:86
#6: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:868
#7: CBitrixComponentTemplate->__IncludeMutatorFile(array, array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:775
#8: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:681
#9: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:629
#10: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/www/bitrix/components/bitrix/menu/component.php:385
#11: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:548
#12: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:94
#13: CBitrixComponent->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:585
#14: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1035
#15: CAllMain->IncludeComponent(string, string, array, boolean, array)
	/home/bitrix/www/sect_leftBlock.php:29
#16: include(string)
	/home/bitrix/www/bitrix/templates/.default/components/bitrix/main.include/template1/template.php:17
#17: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:714
#18: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:806
#19: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:681
#20: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:629
#21: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/www/bitrix/components/bitrix/main.include/component.php:280
#22: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:548
#23: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:600
#24: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1035
#25: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/bitrix/templates/dresscode/header.php:101
#26: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_after.php:96
#27: require(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:11
#28: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#29: require(string)
	/home/bitrix/www/catalog/index.php:2
#30: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#31: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2