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 @ 13:41
Script: /board/board.php?boardid=6&sid=89e06b8cb269fc063ffe46e12a0d9c0b
Referer: