[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`sale_internals_site_currency`.`LID` AS `LID`,
	`sale_internals_site_currency`.`CURRENCY` AS `CURRENCY`
FROM `b_sale_lang` `sale_internals_site_currency` 

/mks-market.ru/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/mks-market.ru/bitrix/modules/main/lib/db/connection.php:329
#1: Bitrix\Main\DB\Connection->query(string)
	/mks-market.ru/bitrix/modules/main/lib/entity/query.php:1924
#2: Bitrix\Main\Entity\Query->query(string)
	/mks-market.ru/bitrix/modules/main/lib/entity/query.php:505
#3: Bitrix\Main\Entity\Query->exec()
	/mks-market.ru/bitrix/modules/main/lib/entity/datamanager.php:256
#4: Bitrix\Main\Entity\DataManager::getList(array)
	/mks-market.ru/bitrix/modules/sale/lib/internals/sitecurrency.php:63
#5: Bitrix\Sale\Internals\SiteCurrencyTable::getCurrency(string)
	/mks-market.ru/bitrix/modules/sale/lib/internals/sitecurrency.php:82
#6: Bitrix\Sale\Internals\SiteCurrencyTable::getSiteCurrency(string)
	/mks-market.ru/bitrix/modules/sale/general/settings.php:52
#7: CSaleLang::GetLangCurrency(string)
	/mks-market.ru/bitrix/components/bitrix/sale.basket.basket.line/class.php:207
#8: SaleBasketLineComponent->executeComponent()
	/mks-market.ru/bitrix/modules/main/classes/general/component.php:585
#9: CBitrixComponent->includeComponent(string, array, boolean)
	/mks-market.ru/bitrix/modules/main/classes/general/main.php:1035
#10: CAllMain->IncludeComponent(string, string, array, boolean)
	/mks-market.ru/bitrix/templates/remont_or/header.php:85
#11: include_once(string)
	/mks-market.ru/bitrix/modules/main/include/prolog_after.php:96
#12: require(string)
	/mks-market.ru/bitrix/modules/main/include/prolog.php:11
#13: require_once(string)
	/mks-market.ru/bitrix/header.php:2
#14: require(string)
	/mks-market.ru/catalog/index.php:4
#15: include_once(string)
	/mks-market.ru/bitrix/modules/main/include/urlrewrite.php:159
#16: include_once(string)
	/mks-market.ru/bitrix/urlrewrite.php:2