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: 19.04.2024 @ 03:25
Script: /board/usercp.php?action=addsubscription&boardid=3&sid=386595963e3d20d4d3c32b9fcab4d2b0
Referer: