Почему Django не находит реверс при входе и выходе из аккаунта?

from django.contrib import admin
from django.urls import path
from core import views
app_name='core'
urlpatterns = [
    path('', views.first, name='first'),
    path('login', views.MyprojectLoginView.as_view(), name='login_page'),
    path('logout',views.MyprojectLogout.as_view(), name='logout_page'),
    ]

from django.shortcuts import render,redirect
from django.views.generic import DetailView,CreateView
from django.views.generic.edit import FormMixin
from .forms import *
from django.urls import reverse,reverse_lazy
from django.contrib.auth.views import LoginView,LogoutView
from django.contrib.auth.models import User
from django.contrib.auth import authenticate,login
def first(request):
    return render(request,'first.html')
class MyprojectLoginView(LoginView):
    template_name = 'login.html'
    form_class = AuthUserForm
    success_url = reverse_lazy('first')
    def get_success_url(self):
        return self.success_url
class MyprojectLogout(LogoutView):
    next_page=reverse_lazy('first')

from django import forms
from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth.models import User
class AuthUserForm(AuthenticationForm,forms.ModelForm):
    class Meta:
        model=User
        fields=('username','password')
    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)
        for field in self.fields:
            self.fields[field].widget.attrs['class']='form-control'