[Answered ]-I can't create a form with password1 password2 in Django

password1 and password2 are not fields of the User. You should remove these:

class CreateUserForm(UserCreationForm):
   class Meta(UserCreationForm.Meta):
       model = User
       fields = ['username', 'email']

but with this, it makes not much sense to inherit the form anyway.

Furthermore you specify the form class with form_class [Django-doc], not form, so:

class CreateUserView(CreateView):
   model = User
   form_class = CreateUserForm
   template_name = 'registration/register.html'