之前设置AUTH_USER_MODEL = 'users.UserProfile' 程序没有报错 后来 不知道改了什么 突然就报错啦。

Unhandled exception in thread started by <_pydev_bundle.pydev_monkey._NewThreadStartupWithTrace instance at 0x7f104ec3ec68>

Traceback (most recent call last):

  File "/home/zxc/下载/pycharm-2018.1/helpers/pydev/_pydev_bundle/pydev_monkey.py", line 589, in __call__

    return self.original_func(*self.args, **self.kwargs)

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper

    fn(*args, **kwargs)

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run

    autoreload.raise_last_exception()

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 249, in raise_last_exception

    six.reraise(*_exception)

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper

    fn(*args, **kwargs)

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/__init__.py", line 18, in setup

    apps.populate(settings.INSTALLED_APPS)

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate

    app_config.import_models(all_models)

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/apps/config.py", line 202, in import_models

    self.models_module = import_module(models_module_name)

  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module

    __import__(name)

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/contrib/admin/models.py", line 32, in <module>

    class LogEntry(models.Model):

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/contrib/admin/models.py", line 41, in LogEntry

    verbose_name=_('user'),

  File "/home/zxc/.virtualenvs/mxonline/local/lib/python2.7/site-packages/django/db/models/fields/related.py", line 750, in __init__

    RECURSIVE_RELATIONSHIP_CONSTANT,

AssertionError: ForeignKey(('users.UserProfile',)) is invalid. First parameter to ForeignKey must be either a model, a model name, or the string u'self'