WiFi-Pumpkin won't start

[Adorbleattic58]

I use kali Linux on windows 10. Every time I would try to launch WIFI-pumpkin this error message would come up.
:0: UserWarning: You do not have a working installation of the service_identity module: 'cannot import name opentype'. Please install it from https://pypi.python.org/pypi/service_identity and make sure all of its dependencies are satisfied. Without the service_identity module, Twisted can perform only rudimentary TLS client hostname verification. Many valid certificate/hostname mappings may be rejected.
wifi-pumpkin.py: cannot connect to X server
It would be really helpful if someone told me how to fix this

[lucianor]

sudo -H wifi-pumpkin