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 @ 13:05
Script: /board/usercp.php?action=addsubscription&boardid=6&sid=051642fa92f6d7ba815dd52a7f4a7855
Referer: