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: 24.04.2024 @ 11:38
Script: /board/usercp.php?action=addsubscription&boardid=7&sid=b7c29bef91f9ceacf39351252694da5a
Referer: