Django错误：ValueError: Dependency on app with no migrations: UserManagement

详细错误提示：

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/django/utils/autoreload.py", line 228, in wrapper
    fn(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 128, in inner_run
    self.check_migrations()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 422, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 20, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 52, in __init__
    self.build_graph()
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 223, in build_graph
    self.add_external_dependencies(key, migration)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 188, in add_external_dependencies
    parent = self.check_key(parent, key[0])
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 169, in check_key
    raise ValueError("Dependency on app with no migrations: %s" % key[0])
ValueError: Dependency on app with no migrations: UserManagement

解决办法：

manage.py makemigrations UserManagement

为UserManagement创建迁移

相关文档介绍：https://docs.djangoproject.com/en/1.7/topics/migrations/#s-custom-fields