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 @ 05:38
Script: /board/board.php?boardid=1&sid=209928811b6b13c126ef911a0661bf93
Referer: