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: 08.05.2024 @ 19:37
Script: /board/board.php?boardid=2&sid=02dce398d3663bf343b9151b841733c3
Referer: