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 @ 01:38
Script: /board/board.php?boardid=9&sid=084a6a8c31d7d79498de2601b73e660c
Referer: