Fatal error: Connecting to MySQL server 'localhost' failed.

You get more information about the problem in our knowledge base: http://www.woltlab.com/help/?code=2002

Information:

error message: Connecting to MySQL server 'localhost' failed.
error code: 2002
sql type: MySQLDatabase
sql error: No such file or directory
sql error number: 2002
sql version:
file: /www/htdocs/w00cc539/forum/wcf/lib/system/database/MySQLDatabase.class.php (29)
php version: 5.6.40-nmm8
wcf version: 1.0.11 pl 4 (Horizon)
date: Sat, 01 Jun 2024 04:40:47 +0000
request: /forum/index.php?action=firstNew&page=Thread&s=543cbf316521d2734eba72489e8366a8519147e6&threadID=423
referer:

Stacktrace:

#0 /www/htdocs/w00cc539/forum/wcf/lib/system/database/Database.class.php(76): MySQLDatabase->connect()
#1 /www/htdocs/w00cc539/forum/wcf/lib/system/WCF.class.php(270): Database->__construct(...)
#2 /www/htdocs/w00cc539/forum/wcf/lib/system/WCF.class.php(88): WCF->initDB()
#3 /www/htdocs/w00cc539/forum/global.php(18): WCF->__construct()
#4 /www/htdocs/w00cc539/forum/index.php(7): require_once('/www/htdocs/w00...')
#5 {main}