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 @ 00:04
Script: /board/board.php?boardid=11&sid=51468c4466c92b439b666cbfae996c0c
Referer: