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: 23.04.2024 @ 17:08
Script: /board/usercp.php?action=buddy&add=43&sid=32bf07c524fbeee16c962cde8887b04f
Referer: