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 @ 14:08
Script: /board/board.php?boardid=9&sid=0b8a4f605fc4a151f84a74898b02a804
Referer: