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: 29.03.2024 @ 10:22
Script: /board/usercp.php?action=addsubscription&boardid=6&sid=fc1ffc6d7177667b173c0a40db0cbc28
Referer: