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: 25.04.2024 @ 06:48
Script: /board/board.php?boardid=9&sid=a6808104ae6790b7418146c1e96a1419
Referer: