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: 25.04.2024 @ 02:04
Script: /board/usercp.php?action=signature_edit&sid=5eecf3055e4e56f0775148ee7806d5f2
Referer: