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: 16.04.2024 @ 11:19
Script: /board/usercp.php?action=buddy&add=1&sid=e9a7507911ffea8b6183164369f71a44
Referer: