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: 19.04.2024 @ 15:39
Script: /board/usercp.php?action=addsubscription&threadid=951&sid=7fbbed3543f17ea96a1ea438749bff0c
Referer: