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: 24.04.2024 @ 00:51
Script: /board/board.php?boardid=6&sid=398502f5dd4aaf38dbee5a79b9f9ec7a
Referer: