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 @ 08:39
Script: /board/board.php?boardid=9&sid=a3cc3a408ead9e2026921f84a637e74c
Referer: