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 @ 10:25
Script: /board/usercp.php?action=addsubscription&boardid=13&sid=979b2240caab5fbb6892e529c7946d37
Referer: