running on non headless system

[HemaZ]

Hi, First of all, thank you for your great effort. I've tried to run the built image on my ubuntu 18.04 machine but I get the following errors.

hema@hema$ ./run.sh 

/usr/lib/xorg/Xorg.wrap: Only console users are allowed to run the X server
No protocol specified
xauth: (argv):1:  unable to open display ":0".

WARNING: The first attempt to start Xvnc failed, possibly because the vncserver
script was not able to figure out an appropriate X11 font path for this system
or because the font path you specified with the -fp argument was not valid.
Attempting to restart Xvnc using the X Font Server (xfs) ...
Could not start Xvnc.

TurboVNC Server (Xvnc) 64-bit v2.1.2 (build 20170925)
Copyright (C) 1999-2017 The VirtualGL Project and many others (see README.txt)
Visit http://www.TurboVNC.org for more information on TurboVNC

24/05/2020 02:23:30 Using auth configuration file /etc/turbovncserver-security.conf
24/05/2020 02:23:30 Enabled authentication method 'none'
_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running

Fatal server error:
Cannot establish any listening sockets - Make sure an X server isn't already running
TurboVNC Server (Xvnc) 64-bit v2.1.2 (build 20170925)
Copyright (C) 1999-2017 The VirtualGL Project and many others (see README.txt)
Visit http://www.TurboVNC.org for more information on TurboVNC

24/05/2020 02:23:31 Using auth configuration file /etc/turbovncserver-security.conf
24/05/2020 02:23:31 Enabled authentication method 'none'
_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running

Fatal server error:
Cannot establish any listening sockets - Make sure an X server isn't already running

Invalid MIT-MAGIC-COOKIE-1 keyxinit: giving up
xinit: unable to connect to X server: Resource temporarily unavailable
xinit: unexpected signal 15

what modification should I make to be able to run this on my machine?

Thank You