Error with FastFixtureTestCase

[Kianoosh76]

When I want to use FastFixtureTestCase and run ./manage.py test --with-fixture-bundling I face this error:

Creating test database for alias 'default'...
Traceback (most recent call last):
  File "./manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
    utility.execute()
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django/core/management/__init__.py", line 345, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django/core/management/commands/test.py", line 30, in run_from_argv
    super(Command, self).run_from_argv(argv)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django/core/management/base.py", line 348, in run_from_argv
    self.execute(*args, **cmd_options)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django/core/management/commands/test.py", line 74, in execute
    super(Command, self).execute(*args, **options)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django/core/management/base.py", line 399, in execute
    output = self.handle(*args, **options)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django/core/management/commands/test.py", line 90, in handle
    failures = test_runner.run_tests(test_labels)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/runner.py", line 303, in run_tests
    result = self.run_suite(nose_argv)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/runner.py", line 241, in run_suite
    addplugins=plugins_to_add)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/nose/core.py", line 121, in __init__
    **extra_args)
  File "//anaconda/envs/lyan/lib/python3.5/unittest/main.py", line 94, in __init__
    self.runTests()
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/nose/core.py", line 207, in runTests
    result = self.testRunner.run(self.test)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/nose/core.py", line 50, in run
    wrapper = self.config.plugins.prepareTest(test)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/nose/plugins/manager.py", line 99, in __call__
    return self.call(*arg, **kw)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/nose/plugins/manager.py", line 167, in simple
    result = meth(*arg, **kw)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/plugin.py", line 262, in prepareTest
    test = self._bundle_fixtures(test)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/plugin.py", line 256, in _bundle_fixtures
    return suite_sorted_by_fixtures(test)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/plugin.py", line 222, in suite_sorted_by_fixtures
    process_tests(suite, bucketer.add)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/utils.py", line 36, in process_tests
    process_tests(t, process)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/utils.py", line 33, in process_tests
    process(suite)
  File "//anaconda/envs/lyan/lib/python3.5/site-packages/django_nose/plugin.py", line 114, in add
    key = (frozenset(getattr(test.context, 'fixtures', [])),
TypeError: 'NoneType' object is not iterable