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: 20.04.2024 @ 02:36
Script: /board/board.php?boardid=6&sid=66b868b18408c96ec31e5817bf05feb0
Referer: