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: 16.04.2024 @ 04:23
Script: /board/usercp.php?action=buddy&add=66&sid=ef650f5fa96d9da29b328a8b6853d077
Referer: