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: 24.04.2024 @ 08:23
Script: /board/usercp.php?action=buddy&add=9&sid=fdd5b45274afdba813823ac56cc35e4e
Referer: