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: 27.04.2024 @ 04:04
Script: /board/usercp.php?action=addsubscription&boardid=4&sid=414cd0c7e53290e8c96492d2505239f5
Referer: