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 @ 09:09
Script: /board/profile.php?userid=9&sid=2a3d8e469a0bccd5474f70cc97758ed4
Referer: