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: 19.04.2024 @ 23:24
Script: /board/editpost.php?postid=51&sid=27c4d21e0df1330629776ea2540187b8
Referer: