Server 500 error reverse openshif with django

I deployed an application in openshift and basically the same is a crud, what happens, whenever I try to register a new client the server returns me "server error 500", can someone tell me why this error? , I'm finding that the problem may be due to my get_absolute_url in my models, the problem is that the application locally runs smoothly, but in the air it does not return this error.

detail I'm using generic views:

#views.py
class ListView(LoginRequiredMixin, ClientMixin, ListView):
    template_name = 'core/client_list.html'
    context_object_name = 'clients'
    paginate_by = 10

#models.py
def get_absolute_url(self):
    return reverse_lazy("profile_view")