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 @ 22:34
Script: /board/usercp.php?action=addsubscription&boardid=4&sid=32712b0e18c2d4e6ea714a5f38fc1b65
Referer: