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: 18.04.2024 @ 22:39
Script: /board/board.php?boardid=9&sid=1e621f0dc566ead55377f429f3a62788
Referer: