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: 27.04.2024 @ 04:42
Script: /board/usercp.php?action=buddy&add=66&sid=2d19c80cb942c512420ca7d3f1806bb8
Referer: