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 @ 03:57
Script: /board/board.php?boardid=2&sid=c6d3af6b35e2eb550f5b31c1dbc1ba6b
Referer: