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=2054

Information:

error message: Connecting to MySQL server 'localhost' failed.
error code: 2054
sql type: MySQLDatabase
sql error: The server requested authentication method unknown to the client
sql error number: 2054
sql version:
file: /var/www/vhosts/web214.xps9.microserver.de/httpdocs/herauna/wcf/lib/system/database/MySQLDatabase.class.php (29)
php version: 5.6.40
wcf version: 1.0.11 pl 3 (Horizon)
date: Sun, 16 Feb 2025 20:51:35 +0000
request: /index.php?item=usercp&page=Help&s=0c92d633cb326e7aba7e140c071bf035fc628a8d
referer:

Stacktrace:

#0 /var/www/vhosts/web214.xps9.microserver.de/httpdocs/herauna/wcf/lib/system/database/Database.class.php(76): MySQLDatabase->connect()
#1 /var/www/vhosts/web214.xps9.microserver.de/httpdocs/herauna/wcf/lib/system/WCF.class.php(270): Database->__construct(...)
#2 /var/www/vhosts/web214.xps9.microserver.de/httpdocs/herauna/wcf/lib/system/WCF.class.php(88): WCF->initDB()
#3 /var/www/vhosts/web214.xps9.microserver.de/httpdocs/herauna/global.php(18): WCF->__construct()
#4 /var/www/vhosts/web214.xps9.microserver.de/httpdocs/herauna/index.php(7): require_once('/var/www/vhosts...')
#5 {main}