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: 20.04.2024 @ 05:15
Script: /board/usercp.php?action=options_change&sid=40ad307d42f5e89418461e7fe4848bc2
Referer: