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 @ 14:46
Script: /board/addreply.php?postid=12968&action=quote&sid=8c1bcaaed7d4a8c9503867771949e7ae
Referer: