Ghost Framework (No Internet connection)

So I have a question I can’t seem to find an answer to. I’ve been trying to use the Ghost Framework I downloaded from this website on Kali-Linux. Now I know I’m connected to the internet but when I go to the Ghost Framework and put in the command update it says “No internet connection”. I’ve deleted and reinstalled but am still having the same issue. Is there any way to fix this? "I’m not on a VM, this is the Windows version of Kali-Linux.

try sudo apt-get upgrade and try running ghost with root 

to get root acces type sudo su