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: 23.04.2024 @ 09:30
Script: /board/usercp.php?action=buddy&add=1&sid=a0fc234b026d52a225575648383f2427
Referer: