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 @ 05:39
Script: /board/usercp.php?action=buddy&add=43&sid=e97efbeeb73708756b62de7d91a91aaa
Referer: