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: 19.04.2024 @ 05:23
Script: /board/profile.php?userid=54&sid=3d800f2ecfd60586e6e4c2be636f7e55
Referer: