Group in default reader fixtures does not exist

[Elementrio]

After running init.py I get an error stating "Group matching query does not exist."

Logs

Migrations for 'reader':
  reader/migrations/0001_initial.py
    - Create model Group
    - Create model Person
    - Create model Series
    - Create model HitCount
    - Create model Volume
    - Create model ChapterIndex
    - Create model Chapter
Traceback (most recent call last):
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/db/models/fields/related_descriptors.py", line 173, in __get__
    rel_obj = self.field.get_cached_value(instance)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/db/models/fields/mixins.py", line 15, in get_cached_value
    return instance._state.fields_cache[cache_name]
KeyError: 'group'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/serializers/json.py", line 70, in Deserializer
    yield from PythonDeserializer(objects, **options)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/serializers/python.py", line 146, in Deserializer
    obj = base.build_instance(Model, data, using)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/serializers/base.py", line 270, in build_instance
    return Model(**data)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/db/models/base.py", line 503, in __init__
    post_init.send(sender=cls, instance=self)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/dispatch/dispatcher.py", line 177, in send
    return [
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/dispatch/dispatcher.py", line 178, in <listcomp>
    (receiver, receiver(signal=self, sender=sender, **named))
  File "/home/kay/dev/python/guyamoe/app/reader/signals.py", line 85, in remember_original_series_of_chapter
    instance.old_group_id = str(instance.group.id) if hasattr(instance, 'group') else None
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/db/models/fields/related_descriptors.py", line 187, in __get__
    rel_obj = self.get_object(instance)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/db/models/fields/related_descriptors.py", line 154, in get_object
    return qs.get(self.field.get_reverse_related_filter(instance))
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/db/models/query.py", line 429, in get
    raise self.model.DoesNotExist(
reader.models.DoesNotExist: Group matching query does not exist.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 21, in <module>
    main()
  File "manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/management/__init__.py", line 395, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/management/base.py", line 330, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/management/base.py", line 371, in execute
    output = self.handle(*args, **options)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/management/commands/loaddata.py", line 72, in handle
    self.loaddata(fixture_labels)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/management/commands/loaddata.py", line 114, in loaddata
    self.load_label(fixture_label)
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/management/commands/loaddata.py", line 172, in load_label
    for obj in objects:
  File "/home/kay/dev/python/guyamoe/lib/python3.8/site-packages/django/core/serializers/json.py", line 74, in Deserializer
    raise DeserializationError() from exc
django.core.serializers.base.DeserializationError: Problem installing fixture '/home/kay/dev/python/guyamoe/app/./reader/fixtures/reader_fixtures.json':

[appu1232]

Hm I believe this is causing issues due to the pre/post save Django signals getting triggered as these objects get saved to the database from the fixture. This is a bit of a hacky solution for setup but you could just comment out everything in reader/signals.py (and misc/signals.py too if that causes issues) and give it a go again.

[Elementrio]

That did in fact fix it.