Error admin

[Eduardo A Castillo]

typeerror en /admin/ 'set' object is not reversible

My code is:  (urls.py)

from django.contrib import admin

from django.urls import path

from aplicacion1 import views 

from django.conf.urls import include 

urlpatterns = [

    path('admin/',admin.site.urls),

    path('aplicacion1/',views.vista1, name='vista1'),

    path('ruta2/', include('aplicacion1.ruta2')),

    path('ruta3',views.vista3, name='vista3'),

    path('ruta4',views.vista4, name= 'vista4'),

]