Python aldryn#u bootstrap3出错：字段定义了与模型的关系''；，它不是未安装的，就是抽象的

在我的virtualenv中运行

migrate.py

时，我收到以下错误：

$ python manage.py migrate aldryn_bootstrap3
CommandError: System check identified some issues:

ERRORS:
aldryn_bootstrap3.Boostrap3ButtonPlugin.link_file: (fields.E300) Field defines a relation with model 'File', which is either not installed, or is abstract.
aldryn_bootstrap3.Boostrap3ImagePlugin.file: (fields.E300) Field defines a relation with model 'Image', which is either not installed, or is abstract.
aldryn_bootstrap3.Bootstrap3CarouselSlideFolderPlugin.folder: (fields.E300) Field defines a relation with model 'Folder', which is either not installed, or is abstract.
aldryn_bootstrap3.Bootstrap3CarouselSlidePlugin.image: (fields.E300) Field defines a relation with model 'Image', which is either not installed, or is abstract.
aldryn_bootstrap3.Bootstrap3CarouselSlidePlugin.link_file: (fields.E300) Field defines a relation with model 'File', which is either not installed, or is abstract.
aldryn_bootstrap3.Bootstrap3FilePlugin.file: (fields.E300) Field defines a relation with model 'File', which is either not installed, or is abstract.

---

我已经在我的

设置中将
aldryn\u bootstrap3
添加到
已安装的应用程序中。py
aldryn bootstrap3取决于。你应该：

您得到的错误（字段定义了与模型“File”的关系，该文件未安装或是抽象的）告诉您，有些模型依赖于Django找不到的其他模型

具体来说，在这种情况下，Aldryn Bootstrap3型号取决于django filer中定义的型号
文件
、
图像
和
文件夹
。
您是否已将django filer添加到已安装的应用程序中？不，我试试看。有必要安装“南方”吗？哇哦！！它起作用了！！我已添加文件管理器并正常迁移！
INSTALLED_APPS = [
    ...
    'filer',
    'mptt',
    'easy_thumbnails',
    ...
]