Python 启动Django应用程序时出错

我尝试在我拉的django repo上运行python3 manage.py runserver，但出现了这个错误

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/django/core/management/__init__.py", line 351, in execute_from_command_line
    utility.execute()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/django/core/management/__init__.py", line 343, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/django/core/management/__init__.py", line 177, in fetch_command
    commands = get_commands()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/django/core/management/__init__.py", line 72, in get_commands
    for app_config in reversed(list(apps.get_app_configs())):
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/django/apps/registry.py", line 137, in get_app_configs
    self.check_apps_ready()
  File "/Library/Frameworks/Python.framework/Vers`enter code here`ions/3.5/lib/python3.5/site-packages/django/apps/registry.py", line 124, in check_apps_ready
    raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

回溯（最近一次呼叫最后一次）：
文件“manage.py”，第10行，在
从命令行（sys.argv）执行命令
文件“/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site packages/django/core/management/__init__.py”，第351行，从命令行执行
utility.execute（）
文件“/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site packages/django/core/management/__init__.py”，第343行，在execute中
self.fetch_命令（子命令）。从_argv（self.argv）运行_
文件“/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site packages/django/core/management/_init__.py”，第177行，在fetch_命令中
commands=get_commands（）
文件“/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site packages/django/core/management/_init__.py”，第72行，在get_命令中
对于反向中的应用程序配置（列表（apps.get\u app\u configs（））：
文件“/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site packages/django/apps/registry.py”，第137行，在get\u app\u configs中
self.check_apps_ready（）
文件“/Library/Frameworks/Python.framework/Vers`在这里输入代码`ions/3.5/lib/python3.5/site packages/django/apps/registry.py”，第124行，在check_apps_ready中
raise AppRegistryNotReady（“应用程序尚未加载。”）
django.core.exceptions.AppRegistryNotReady:尚未加载应用程序。

您很可能缺少依赖项。可能存在重复项