Django Getting this error with UpdateView: NoReverseMatch at /user/2/edit -

i have update view users update profiles. keep getting error:

noreversematch @ /user/2/edit reverse 'user_profile' no arguments not found. 1 pattern(s) tried: ['user/(?p<pk>\\d+)/$'] 

nothing i've tried working (adding pk, etc.).

the updateview:

class usereditprofileview(loginrequiredmixin,updateview):     login_url = '/login/'     model = userprofile     fields = [             'first_name',             'profile_pic',             'location',             'title',             'user_type',             'website',             'about',             'twitter',             'dribbble',             'github'             ]     template_name_suffix = '_edit_form'     success_url = reverse_lazy('users:user_profile') 

app urls:

from django.conf.urls import url users import views  app_name = 'users'  urlpatterns = [     url(r'^$',views.userlistview.as_view(),name='user_list'),     url(r'^(?p<pk>\d+)/$',views.detailprofile,name='user_profile'),     url(r'^(?p<pk>\d+)/edit$',views.usereditprofileview.as_view(),name='user_profile_edit'),     url(r'^login/$',views.user_login,name='user_login'),     url(r'^logout/$',views.user_logout,name='user_logout'),     url(r'^register/$',views.register,name='register'), ] 

edit profile template:

{% extends "users/base.html" %}  {% block content %}      <div class="form-base">         <h2>edit profile</h2>         <form method="post">             {% csrf_token %}             {{ form.as_p }}             <input type="submit" value="save" />         </form> </div>  {% endblock %} 

let me know if need see else.

you need provide pk in user_profile

class usereditprofileview(loginrequiredmixin,updateview):     login_url = '/login/'     model = userprofile     fields = [         'first_name',         'profile_pic',         'location',         'title',         'user_type',         'website',         'about',         'twitter',         'dribbble',         'github'         ]     template_name_suffix = '_edit_form'      def get_success_url(self):         userid = self.kwargs['pk']         return reverse_lazy('users:user_profile', kwargs={'pk': userid})