ERR_CONNECTION_REFUSED after new instalation

hi. right now i am not able to access my cyberpanel after installation.

i tried to -
systemctl restart lscpd
but not works

and if you know any troubleshoot step please share.

i tried on https://myip:8090
right now it is showing - ERR_CONNECTION_REFUSED

Welcome @rianokta Happy you are here

Try an upgrade of your CyberPanel copy and reboot the server