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: 28.03.2024 @ 21:00
Script: /board/usercp.php?action=addsubscription&boardid=11&sid=9931e0518f8ba1a455354066a49e61ce
Referer: