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: 29.03.2024 @ 05:55
Script: /board/board.php?boardid=9&sid=98160c89b789f8be2ba73f64d9cfb2b1
Referer: