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 @ 14:18
Script: /board/usercp.php?action=addsubscription&boardid=24&sid=cfb6480e42921fa1425535e7613c22f4
Referer: