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: 26.04.2024 @ 17:43
Script: /board/usercp.php?action=buddy&add=3&sid=a9e05452201705cccd109deb478df08d
Referer: