[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`exchange_rates`.`ID` AS `ID`,
	`exchange_rates`.`UF_NAME` AS `UF_NAME`,
	`exchange_rates`.`UF_IMAGE` AS `UF_IMAGE`,
	`exchange_rates`.`UF_USDBUY` AS `UF_USDBUY`,
	`exchange_rates`.`UF_USDSELL` AS `UF_USDSELL`,
	`exchange_rates`.`UF_EURSALE` AS `UF_EURSALE`,
	`exchange_rates`.`UF_EURBUY` AS `UF_EURBUY`,
	`exchange_rates`.`UF_RUBBUY` AS `UF_RUBBUY`,
	`exchange_rates`.`UF_RUBSALE` AS `UF_RUBSALE`
FROM `b_exchange_rates` `exchange_rates` 

/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:3190
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:806
#3: Bitrix\Main\ORM\Query\Query->exec()
	/home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php:457
#4: Bitrix\Main\ORM\Data\DataManager::getList()
	/home/bitrix/www/local/templates/template/header.php:18
#5: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_after.php:106
#6: require(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:11
#7: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#8: require(string)
	/home/bitrix/www/news/index.php:2
#9: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#10: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2