[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2002) Connection refused (400)
/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/lib/db/mysqliconnection.php:82
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/lib/data/connection.php:53
#1: Bitrix\Main\Data\Connection->getResource()
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/classes/general/database.php:283
#2: CAllDatabase->DoConnect()
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/classes/mysql/database.php:94
#3: CDatabaseMysql->Query(string, boolean, string)
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/classes/mysql/short_uri.php:147
#4: CBXShortUri::GetList(array, array)
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/classes/general/short_uri.php:95
#5: CBXAllShortUri::GetUri(string)
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/classes/general/short_uri.php:280
#6: CBXAllShortUri::CheckUri()
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/include.php:370
#7: require_once(string)
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/include/prolog_before.php:14
#8: require_once(string)
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/modules/main/include/prolog.php:10
#9: require_once(string)
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/header.php:1
#10: require(string)
	/var/www/vhosts/tayfi.kz/httpdocs/404.php:3
#11: include_once(string)
	/var/www/vhosts/tayfi.kz/httpdocs/bitrix/urlrewrite.php:4
----------