Ошибка: 'django.db.utils.IntegrityError: NOT NULL constraint failed: base_user.is_superuser'

Здравствуйте, я создаю форму регистрации в django и возникла эта ошибка.
Пробовал много вещей и просто пришел за помощью
. Вот мой код

RegistrationForm

class RegistrationForm(UserCreationForm):
    full_name = forms.CharField(max_length=255, widget=forms.TextInput(attrs={'class': 'inpt', 'placeholder': 'Insira o seu nome completo'}))
    email = forms.EmailField(max_length=255, help_text="Required email", widget=forms.EmailInput(attrs={'class': 'inpt', 'placeholder': 'Insira o seu email'}))
    password1 = forms.CharField(max_length=255, widget=forms.PasswordInput(attrs={'class': 'inpt', 'placeholder': 'Insira a sua password'}))
    password2 = forms.CharField(max_length=255, widget=forms.PasswordInput(attrs={'class': 'inpt', 'placeholder': 'Confirme a sua password'}))

    class Meta:
        model = User
        fields = ('full_name', 'email', 'password1', 'password2') 

UserManager

class UserManager(BaseUserManager):
    def create_user(self, email, full_name, password=None, is_staff=False, is_admin=False, is_superuser=False):
        if not email:
            raise ValueError('User must have an email address')
        if not password:
            raise ValueError('Users must have a password')
        user_obj = self.model(
            email = self.normalize_email(email)
        )
        user_obj.set_password(password)
        user_obj.staff = is_staff
        user_obj.admin = is_admin
        user_obj.full_name = full_name
        user_obj.save(using=self.db)
        
        return user_obj
    
    def create_superuser(self, email, full_name, password=None):
        user = self.create_user(
            email,
            password=password,
            full_name=full_name,
            is_staff=True,
            is_admin=True,
            is_superuser=True        
        )
        return user

Мое представление регистра

...
    context = {}
    if request.method == 'POST':
        form = RegistrationForm(request.POST)
        if form.is_valid():
            form.save()
            email = form.cleaned_data.get('email')
            raw_password = form.cleaned_data.get('password1')
            user = authenticate(email=email, password=raw_password)
            login(request, user)
            return redirect('home')
        else:
            context['registration_form'] = form
    else:
        form = RegistrationForm()
        context['registration_form'] = form
...

Большое спасибо за внимание!
Я думаю, что ошибка в UserManager, пробовал менять некоторые вещи, но та же ошибка всегда

Вернуться на верх