Use set_urlconf() to set urlconf sice we not are in a proper request.

opentech/apply/projects/management/commands/notify_report_due.py

@@ -5,7 +5,7 @@ from django.contrib.messages.storage.fallback import FallbackStorage
 from django.core.management.base import BaseCommand
 from django.http import HttpRequest
 from django.utils import timezone
-
+from django.urls import set_urlconf
 from opentech.apply.activity.messaging import MESSAGES, messenger
 from opentech.apply.home.models import ApplyHomePage
 from opentech.apply.projects.models import Project
@@ -19,6 +19,7 @@ class Command(BaseCommand):
 
     def handle(self, *args, **options):
         site = ApplyHomePage.objects.first().get_site()
+        set_urlconf('opentech.apply.urls')
 
         # Mock a HTTPRequest in order to pass the site settings into the
         # templates