gistfile1.txt

Traceback (most recent call last):
  File "manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 357, in execute
    django.setup()
  File "/usr/local/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/usr/local/lib/python3.7/site-packages/django/apps/registry.py", line 122, in populate
    app_config.ready()
  File "/usr/local/lib/python3.7/site-packages/django/contrib/admin/apps.py", line 24, in ready
    self.module.autodiscover()
  File "/usr/local/lib/python3.7/site-packages/django/contrib/admin/__init__.py", line 26, in autodiscover
    autodiscover_modules('admin', register_to=site)
  File "/usr/local/lib/python3.7/site-packages/django/utils/module_loading.py", line 47, in autodiscover_modules
    import_module('%s.%s' % (app_config.name, module_to_search))
  File "/usr/local/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/usr/src/app/app1/admin.py", line 10, in <module>
    from reversion_compare.admin import CompareVersionAdmin
  File "/usr/local/lib/python3.7/site-packages/reversion_compare/admin.py", line 28, in <module>
    from reversion_compare.mixins import CompareMethodsMixin, CompareMixin
  File "/usr/local/lib/python3.7/site-packages/reversion_compare/mixins.py", line 15, in <module>
    from reversion_compare.compare import CompareObjects
  File "/usr/local/lib/python3.7/site-packages/reversion_compare/compare.py", line 20, in <module>
    from reversion import is_registered
ImportError: cannot import name 'is_registered' from 'reversion' (/usr/local/lib/python3.7/site-packages/reversion/__init__.py)