[skipping] Expected file: /home/jtx/Development/inkscape/inkscape-web/data/fixtures/media/forum/icon/art_gallery.svg
Traceback (most recent call last):
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py", line 178, in __get__
    rel_obj = getattr(instance, self.cache_name)
AttributeError: 'Forum' object has no attribute '_content_type_cache'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/jtx/Development/inkscape/inkscape-web/utils/../inkscape/manage.py", line 33, in <module>
    execute_from_command_line(sys.argv)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/management/__init__.py", line 356, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/jtx/Development/inkscape/inkscape-web/resources/management/commands/loaddata.py", line 89, in handle
    ret = super(Command, self).handle(*fixture_labels, **options)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 69, in handle
    self.loaddata(fixture_labels)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 109, in loaddata
    self.load_label(fixture_label)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 175, in load_label
    obj.save(using=self.using)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/core/serializers/base.py", line 205, in save
    models.Model.save_base(self.object, using=using, raw=True, **kwargs)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/db/models/base.py", line 848, in save_base
    update_fields=update_fields, raw=raw, using=using,
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/dispatch/dispatcher.py", line 193, in send
    for receiver in self._live_receivers(sender)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/dispatch/dispatcher.py", line 193, in <listcomp>
    for receiver in self._live_receivers(sender)
  File "/home/jtx/Development/inkscape/inkscape-web/forums/app.py", line 36, in _inner
    func(instance, **kw)
  File "/home/jtx/Development/inkscape/inkscape-web/forums/app.py", line 79, in new_forum
    if instance.content_type:
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py", line 184, in __get__
    rel_obj = self.get_object(instance)
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py", line 159, in get_object
    return qs.get(self.field.get_reverse_related_filter(instance))
  File "/home/jtx/Development/inkscape/inkscape-web/pythonenv/lib/python3.6/site-packages/django/db/models/query.py", line 380, in get
    self.model._meta.object_name
django.contrib.contenttypes.models.DoesNotExist: Problem installing fixture '/home/jtx/Development/inkscape/inkscape-web/data/fixtures/forums.json': ContentType matching query does not exist.