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: 20.04.2024 @ 03:53
Script: /board/usercp.php?action=addsubscription&threadid=918&sid=75935f32cb9b7519d0dd31288b07659f
Referer: