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: 26.04.2024 @ 06:48
Script: /board/board.php?boardid=9&sid=2841d9de2c04ba726a24d90926851abe
Referer: