SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: The server requested authentication method unknown to the client
mysql error number: 2054
Date: 18.04.2024 @ 12:55
Script: /board/usercp.php?action=buddy&add=32&sid=df21bb7a3eee21bc472523212c2d27bc
Referer: