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: 24.04.2024 @ 18:31
Script: /board/board.php?boardid=5&sid=a51e7bf9f9a14db70e85a926b46acc78
Referer: