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 @ 14:30
Script: /board/usercp.php?action=addsubscription&threadid=932&sid=22d3c973e959f5d2eb61dbd9231f3714
Referer: