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 @ 17:34
Script: /board/usercp.php?action=buddy&add=33&sid=721920206ddb166b3109c184bc7cad9e
Referer: