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: 18.04.2024 @ 17:33
Script: /board/usercp.php?action=addsubscription&boardid=11&sid=1b7c0c6cf1e51a9570a6679e632e663c
Referer: