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 @ 15:00
Script: /board/board.php?boardid=10&sid=ff8409a0a97446eec2af985f752824de
Referer: