add required imports

netbox_ddns/views.py

@@ -1,7 +1,7 @@
 from django.contrib import messages
 from django.contrib.auth.mixins import PermissionRequiredMixin
 from django.http import Http404
-from django.shortcuts import get_object_or_404, redirect
+from django.shortcuts import get_object_or_404, redirect, render
 from django.urls import reverse
 from django.utils.translation import gettext as _
 from django.views import View