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 @ 15:23
Script: /board/board.php?boardid=11&sid=b85c339cc7a173d4af22b8effc7dcfca
Referer: