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: 29.03.2024 @ 06:57
Script: /board/board.php?boardid=9&sid=4a71bf1d061cd8059b652b0c52ea238c
Referer: