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: 27.04.2024 @ 01:24
Script: /board/profile.php?userid=51&sid=6e2261df82b8fd19677697517ddf0341
Referer: