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: 23.04.2024 @ 08:03
Script: /board/usercp.php?action=addsubscription&boardid=6&sid=d45e0d3377d24c56f821c41cbcbc7322
Referer: