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: 19.04.2024 @ 14:07
Script: /board/usercp.php?action=buddy&add=6&sid=b359eec597159e3de66a576f3e643edc
Referer: