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 @ 17:31
Script: /board/board.php?boardid=9&sid=61d64029add58eca424ab4777742bfb0
Referer: