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: 07.05.2024 @ 23:47
Script: /board/board.php?boardid=10&sid=1ece6d8e777c34ac1bc6095c4ef269c1
Referer: