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 @ 19:47
Script: /board/usercp.php?action=addsubscription&boardid=28&sid=4c493ea8b6b48c3c679ecdd34c1e002d
Referer: