[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`currency_currency`.`CURRENCY` AS `CURRENCY`,
	`currency_currency_current_lang_format`.`FULL_NAME` AS `FULL_NAME`,
	`currency_currency`.`SORT` AS `SORT`,
	`currency_currency_current_lang_format`.`CURRENCY` AS `UALIAS_0`,
	`currency_currency_current_lang_format`.`LID` AS `UALIAS_1`
FROM `b_catalog_currency` `currency_currency` 
LEFT JOIN `b_catalog_currency_lang` `currency_currency_current_lang_format` ON `currency_currency`.`CURRENCY` = `currency_currency_current_lang_format`.`CURRENCY`
AND `currency_currency_current_lang_format`.`LID` = 'ru'
ORDER BY `SORT` ASC, `CURRENCY` 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/currency/lib/currencymanager.php:121
#5: Bitrix\Currency\CurrencyManager::getCurrencyList()
	/home/bitrix/www/bitrix/modules/currency/lib/currencymanager.php:146
#6: Bitrix\Currency\CurrencyManager::isCurrencyExist(string)
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:556
#7: Bitrix\Iblock\Component\Base->initCurrencyConvert()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4041
#8: Bitrix\Iblock\Component\Base->processResultData()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/element.php:286
#9: Bitrix\Iblock\Component\Element->processResultData()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4551
#10: Bitrix\Iblock\Component\Base->loadData()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4540
#11: Bitrix\Iblock\Component\Base->initialLoadAction()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/element.php:271
#12: Bitrix\Iblock\Component\Element->initialLoadAction()
	
#13: call_user_func(array)
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4725
#14: Bitrix\Iblock\Component\Base->doAction()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4743
#15: Bitrix\Iblock\Component\Base->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:656
#16: CBitrixComponent->includeComponent(string, array, object, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#17: CAllMain->IncludeComponent(string, string, array, object)
	/home/bitrix/www/bitrix/templates/magnet_s2/components/bitrix/catalog/main/element.php:235
#18: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:789
#19: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:884
#20: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:764
#21: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:712
#22: CBitrixComponent->includeComponentTemplate(string)
	/home/bitrix/www/bitrix/components/bitrix/catalog/component.php:171
#23: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#24: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:680
#25: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#26: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/ext_www/s2/index.php:782
#27: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#28: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2