Hi all

I'm wondering if you guys can point me in the right direction?

I have a hosted vps running Ubuntu server that I had installed ubuntu-desktop on, with vnc for remote access.

I upgraded to 18.4 LTS yesterday, and now when I vnc in, I get no desktop (just grey) and I can't open Fire Fox.
In terminal, if I open Firefox as root, it complains and asks to be run as intended user. su as user and it then fails with can't connect to display: :1.

Can anybody help me get the gui to function correctly again, please?

Much obliged, thanks.