Django Postman实现，用于发送消息

Question

我正在尝试使用该Django-Postman框架在中的用户之间发送消息Django 2.0。我已经安装了应用程序，并做了必要的更改，如框架文档中所述。但是，当我尝试转到消息URL时，我得到了一个空白页（如此屏幕截图）：到目前为止，这是我所做的：已安装 django-postman在 settings.pyINSTALLED_APPS = [    'django.contrib.admin',    'django.contrib.auth',    'django.contrib.contenttypes',    'django.contrib.sessions',    'django.contrib.messages',    'django.contrib.staticfiles',    'postman',    'account',    'cart',    'shop',    'landingpage',]POSTMAN_I18N_URLS = True  # default is FalsePOSTMAN_DISALLOW_ANONYMOUS = True  # default is FalsePOSTMAN_DISALLOW_MULTIRECIPIENTS = True  # default is FalsePOSTMAN_DISALLOW_COPIES_ON_REPLY = True  # default is FalsePOSTMAN_DISABLE_USER_EMAILING = True  # default is FalsePOSTMAN_FROM_EMAIL = '[e-mail]'  # default is DEFAULT_FROM_EMAILPOSTMAN_AUTO_MODERATE_AS = True  # default is NonePOSTMAN_SHOW_USER_AS = 'get_full_name'  # default is NonePOSTMAN_NAME_USER_AS = 'last_name'  # default is NonePOSTMAN_QUICKREPLY_QUOTE_BODY = True  # default is FalsePOSTMAN_NOTIFIER_APP = None  # default is 'notification'POSTMAN_MAILER_APP = None  # default is 'mailer'我已经以这种方式链接了网址 urls.pyurl(r'^messages/', include('postman.urls', namespace='postman')),我怎么解决这个问题？