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: 26.04.2024 @ 15:49
Script: /board/formmail.php?threadid=651&sid=7624b263a2d010c89724f5d8daa93de0
Referer: