[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2002) Connection refused (400)
/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/db/mysqliconnection.php:65
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/db/mysqliconnection.php:122
#1: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/db/connection.php:330
#2: Bitrix\Main\DB\Connection->query(string)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/orm/query/query.php:3207
#3: Bitrix\Main\ORM\Query\Query->query(string)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/orm/query/query.php:806
#4: Bitrix\Main\ORM\Query\Query->exec()
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/orm/data/datamanager.php:484
#5: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/orm/data/datamanager.php:345
#6: Bitrix\Main\ORM\Data\DataManager::getByPrimary(array)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/lib/orm/data/datamanager.php:360
#7: Bitrix\Main\ORM\Data\DataManager::getById(integer)
	/var/www/nce/data/www/nce.kz/local/php_interface/functions.php:33
#8: GetEntityDataClass(integer)
	/var/www/nce/data/www/nce.kz/local/php_interface/kazinsys/SiteLang.php:54
#9: SiteLang::init(integer, integer)
	/var/www/nce/data/www/nce.kz/local/php_interface/init.php:28
#10: include_once(string)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/include.php:236
#11: require_once(string)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/include/prolog_before.php:14
#12: require_once(string)
	/var/www/nce/data/www/nce.kz/bitrix/modules/main/include/prolog.php:10
#13: require_once(string)
	/var/www/nce/data/www/nce.kz/bitrix/header.php:1
#14: require(string)
	/var/www/nce/data/www/nce.kz/index.php:1