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: 28.03.2024 @ 09:23
Script: /board/editpost.php?postid=12968&sid=81a4cb06cf23f2774ecf64f529f0d283
Referer: