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: 29.03.2024 @ 15:04
Script: /board/formmail.php?threadid=938&sid=935889afb181a5445c21e0d6f95727d4
Referer: