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 @ 11:32
Script: /board/newthread.php?boardid=9&sid=6d79c2eb0ae082e8d16206eb2d02a2c4
Referer: