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 @ 23:58
Script: /board/usercp.php?action=signature_edit&sid=916551f22d55d175da0585fea8115a8f
Referer: