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: 18.04.2024 @ 19:02
Script: /board/editpost.php?postid=59&sid=49dfe65a172b3798e7d20625bde7e27b
Referer: