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 @ 05:34
Script: /board/editpost.php?postid=14699&sid=f26da5200b6f6483337b9801f8b235c1
Referer: