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: 25.04.2024 @ 10:08
Script: /board/usercp.php?action=buddy&add=66&sid=143d6478620c520a075e821e6f7dec6e
Referer: