Django:django.core.exceptions.ImproperlyConfigured: Specifying a namespace in include() without providing an app_name is not supported.

from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    # 错误代码演示
    # path('axf/', include('App.urls', namespace='axf'))
    # 正确的代码
    path('axf/', include(('App.urls', 'axf'), namespace='axf'))
]