[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost, 127.0.0.1]: Connection refused (400)
/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/lib/db/mysqlconnection.php:50
#0: Bitrix\Main\DB\MysqlConnection->connectInternal()
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/lib/db/mysqlconnection.php:103
#1: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/lib/db/connection.php:330
#2: Bitrix\Main\DB\Connection->query(string)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/lib/orm/query/query.php:3193
#3: Bitrix\Main\ORM\Query\Query->query(string)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/lib/orm/query/query.php:806
#4: Bitrix\Main\ORM\Query\Query->exec()
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/lib/orm/data/datamanager.php:467
#5: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/alexkova.sale24/lib/core.php:184
#6: Alexkova\Sale24\Core->getRule()
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/alexkova.sale24/lib/core.php:147
#7: Alexkova\Sale24\Core->isSale24()
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/alexkova.sale24/lib/prolog.php:16
#8: Alexkova\Sale24\Prolog::init()
	
#9: call_user_func_array(array, array)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/classes/general/module.php:490
#10: ExecuteModuleEventEx(array)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/include.php:284
#11: require_once(string)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/include/prolog_before.php:14
#12: require_once(string)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/include/prolog.php:10
#13: require_once(string)
	/var/www/knigamir/data/www/knigamir.com/bitrix/header.php:1
#14: require(string)
	/var/www/knigamir/data/www/knigamir.com/search/po/index.php:1
#15: include_once(string)
	/var/www/knigamir/data/www/knigamir.com/bitrix/modules/main/include/urlrewrite.php:159
#16: include_once(string)
	/var/www/knigamir/data/www/knigamir.com/bitrix/urlrewrite.php:2