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: 08.05.2024 @ 23:08
Script: /board/addreply.php?postid=14699&action=quote&sid=145d8c682b6c3519f7dd89dd7b3919cc
Referer: