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: 08.05.2024 @ 16:00
Script: /board/addreply.php?postid=59&action=quote&sid=926cbfb7636c7b8bac500b5c25d65244
Referer: