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: 24.04.2024 @ 20:16
Script: /board/usercp.php?action=buddy&add=47&sid=e98d3d20f60dba8e4bebacd65b470047
Referer: