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 @ 07:02
Script: /board/addreply.php?postid=14699&action=quote&sid=b3247b0b457fa6ae5bea87ec992b7cbc
Referer: