replaced ugettext_lazy with gettext_lazy

nwfilters/views.py

@@ -1,7 +1,7 @@
 from django.http import HttpResponseRedirect
 from django.shortcuts import get_object_or_404, render
 from django.urls import reverse
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from libvirt import libvirtError
 
 from admin.decorators import superuser_only