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 @ 06:05
Script: /board/usercp.php?action=buddy&add=50&sid=b8b5e3ab769592c888e9c0040dbe4416
Referer: