Django - Site matching query does not exist

Add django.contrib.sites in django INSTALLED_APPS and also add SITE_ID=1 in your django setting file.

Every django app needs a Site to run. Here you do not seem to have it.

Log into your django shell

$> ./manage.py shell
>>> from django.contrib.sites.models import Site
>>> site = Site()
>>> site.domain = 'example.com'
>>> site.name = 'example.com'
>>> site.save()

or

$> ./manage.py shell
>>> from django.contrib.sites.models import Site
>>> site = Site.objects.create(domain='example.com', name='example.com')
>>> site.save()

You should be all set.