Manager isn't available; 'auth.User' has been swapped for 'accounts.CustomUser'エラー解決でDBにアカウントを登録方法

Question

＜環境＞
・django バージョン: 3.2.5
・pythonバージョン :3.8.12
＜やりたい事＞
・アカウント登録ページからアカウントの情報DBに登録するDjangoの機能を問題なく機能させたい。
accounts.urlsにてルーティングしてacccounts.viewsでレンダリング
↓

＜現状＞
・下記のようなエラーが出てるためアカウントの登録ができない。
詳細は調べたけど全然把握できていません。
・settings.pyにて『AUTH_USER_MODEL='accounts.CustomUser'』、
『INSTALLED_APPS = [ 'accounts.apps.AccountsConfig', ]』を設定済み。

＜エラー内容＞

Internal Server Error: /signup/
Traceback (most recent call last):
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\views\generic\base.py", line 70, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\views\generic\base.py", line 98, in dispatch
    return handler(request, *args, **kwargs)
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\views\generic\edit.py", line 172, in post
    return super().post(request, *args, **kwargs)
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\views\generic\edit.py", line 141, in post
    if form.is_valid():
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\forms\forms.py", line 175, in is_valid
    return self.is_bound and not self.errors
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\forms\forms.py", line 170, in errors
    self.full_clean()
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\forms\forms.py", line 374, in full_clean
    self._post_clean()
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\contrib\auth\forms.py", line 117, in _post_clean
    super()._post_clean()
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\forms\models.py", line 413, in _post_clean
    self.instance.full_clean(exclude=exclude, validate_unique=False)
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\db\models\base.py", line 1223, in full_clean
    self.clean()
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\contrib\auth\models.py", line 371, in clean
    self.email = self.__class__.objects.normalize_email(self.email)
  File "C:\Users\user\anaconda3\envs\django_env\lib\site-packages\django\db\models\manager.py", line 187, in __get__
    raise AttributeError(
AttributeError: Manager isn't available; 'auth.User' has been swapped for 'accounts.CustomUser'

＜コード＞
django
apps.py

from django.apps import AppConfig


class AccountsConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'accounts'

forms.py

from django.contrib.auth.forms import UserCreationForm
from .models import CustomUser

class CustomUserCreationForm(UserCreationForm):
    '''
    UserCreationFormのサブクラス
    '''
    model =CustomUser
    fields = ('username','email','password1','password2')

models.py

from django.db import models
from django.contrib.auth.models import AbstractUser
# Create your models here.


class CustomUser(AbstractUser):
    '''
    Userモデルを継承したカスタムモデル
    '''
    pass

urls.py

from django.urls import path
from . import views


app_name='accounts'

urlpatterns=[
    path('signup/',views.SignUpView.as_view(),name='signup'),
    path('signup_success/',views.SignUpSuccessView.as_view(),name='signup_success'),
]

views.py

from django.shortcuts import render
from django.views.generic import CreateView,TemplateView
from django.urls import reverse_lazy
from .forms import CustomUserCreationForm


# Create your views here.

class SignUpView(CreateView):
    form_class=CustomUserCreationForm
    template_name="signup.html"
    success_url=reverse_lazy('accounts:signup_success')

    def form_valid(self,form):
        user=form.save()
        self.object=user
        return super().form_valid(form)

class SignUpSuccessView(TemplateView):
    template_name="signup_success.html"

わかる方いれば教えてください。

Answer 1

勘違いでした。
サブクラスを忘れていただけでした。