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: 25.04.2024 @ 09:57
Script: /board/addreply.php?postid=1002&action=quote&sid=af85b9fbb086df27e97bceb4dfebfe69
Referer: