[CentOS] vnc on C7

I am trying to get a remote screen on C7.
I did the following on C7 server:
               yum install tigervnc-server
                cp /lib/systemd/system/vncserver at .service
/etc/systemd/system/vncserver@:1.service
                systemctl daemon-reload
                edit /etc/systemd/system/vncserver@:1.service and replace
<USER> with myuser
                su - myuser run vncpassword to set password
                systemctl start vncserver@:1.service
                systemctl enable vncserver@:1.service

Then when I use something like vncviewer from a windows laptop into the
linux desktop
I get the password prompt, but the next screen says "oh no, something went
wrong".

Did I do something wrong above?
Thanks,

Jerry