[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2002) No such file or directory (400)
/var/www/html/bitrix/modules/main/lib/db/mysqliconnection.php:82
#0: Bitrix\Main\DB\MysqliConnection->connectInternal
	/var/www/html/bitrix/modules/main/lib/data/connection.php:53
#1: Bitrix\Main\Data\Connection->getResource
	/var/www/html/bitrix/modules/main/classes/general/database.php:282
#2: CAllDatabase->DoConnect
	/var/www/html/bitrix/modules/main/classes/mysql/database_mysqli.php:73
#3: CDatabase->ForSql
	/var/www/html/bitrix/modules/statistic/classes/mysql/stoplist.php:183
#4: CStoplist::Check
	/var/www/html/bitrix/modules/main/classes/general/module.php:480
#5: ExecuteModuleEventEx
	/var/www/html/bitrix/modules/main/include.php:170
#6: require_once(string)
	/var/www/html/bitrix/modules/main/include/prolog_before.php:14
#7: require_once(string)
	/var/www/html/bitrix/modules/main/include/prolog.php:10
#8: require_once(string)
	/var/www/html/bitrix/header.php:1
#9: require(string)
	/var/www/html/catalog/index.php:1
#10: include_once(string)
	/var/www/html/bitrix/modules/main/include/urlrewrite.php:160
#11: include_once(string)
	/var/www/html/404.php:2