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: 19.04.2024 @ 15:25
Script: /board/editpost.php?postid=14774&sid=41acf2a422c9362a1ae60e46fe8f421b
Referer: