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: 18.04.2024 @ 09:54
Script: /board/board.php?boardid=1&sid=b2e0e6c58d781611bc7d1abcdb4bbada
Referer: