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: 20.04.2024 @ 01:51
Script: /board/board.php?boardid=6&sid=af85b9fbb086df27e97bceb4dfebfe69
Referer: