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: 25.04.2024 @ 13:53
Script: /board/usercp.php?action=addsubscription&boardid=2&sid=f3615046a67add52c3089422e7fa6b45
Referer: