x is not a egistered namespace 해결어떻게함??

[익명(125.182)]

django.urls.exceptions.NoReverseMatch: 'cart' is not a egistered namespace

url,py 들어가서 path('cart/', include('cart.urls')), 추가했는데'config.urls' does not appear to have any patterns  이오류뜨네 ㅜㅜ

어떻게??