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: 26.04.2024 @ 17:06
Script: /board/usercp.php?action=addsubscription&boardid=4&sid=7d1b20c998962c990f84ff39feba8023
Referer: