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: 26.04.2024 @ 14:22
Script: /board/usercp.php?action=addsubscription&boardid=28&sid=2ce09832e79ca8dd02be5f5d14594f27
Referer: