[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2002) Connection refused (400)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:82
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/home/bitrix/www/bitrix/modules/main/lib/data/connection.php:53
#1: Bitrix\Main\Data\Connection->getResource()
	/home/bitrix/www/bitrix/modules/main/classes/general/database.php:283
#2: CAllDatabase->DoConnect()
	/home/bitrix/www/bitrix/modules/main/classes/mysql/database_mysqli.php:73
#3: CDatabase->ForSql(string, integer)
	/home/bitrix/www/bitrix/modules/statistic/classes/mysql/stoplist.php:183
#4: CStoplist::Check()
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:480
#5: ExecuteModuleEventEx(array)
	/home/bitrix/www/bitrix/modules/main/include.php:173
#6: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#7: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#8: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#9: require_once(string)
	/home/bitrix/www/404.php:18
#10: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:4
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