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: 25.04.2024 @ 11:51
Script: /board/board.php?boardid=8&sid=d5a221bb4b0575fc7e97b4482b7861ab
Referer: