TypeError at /admin/ 'set' object is not reversible and argument( ) to reverse must be a sequence

Question

My app was working perfectly but when I tried the admin url, this error occurred.I can access every page of the website except for the admin page. My project is min

Answer 1

i found solution here, and its work for me

urlpatterns = [
     url(r'^admin/', admin.site.urls),
     url(r'^', include('main.urls')),
     url(r'^', include('signup.urls',namespace='signup')),
]

remove "," from the last line of urlpatterns array

urlpatterns = [
     url(r'^admin/', admin.site.urls),
     url(r'^', include('main.urls')),
     url(r'^', include('signup.urls',namespace='signup'))
]

from http://stackoverflaw.com/question/set-project-is-not-revertable-in-_populate-line-416/