error command sudo nautilus

[mojtaba-mehdipour]

hi
i have Ubuntu 18.10 and use script.
my problem this is error command sudo nautilus

root@mojtaba:~# sudo nautilus
No protocol specified
Unable to init server: Could not connect: Connection refused

(nautilus:10982): Gtk-WARNING **: 08:22:42.221: cannot open display: :0

tnx

[viditvarshney]

please check that you are allowing the root access @mojtaba472