Das Benutzermodell ist wie folgt.

class User(AbstractUser):
    username = None
    email = models.EmailField('email address', unique=True)
    first_name = models.CharField('First Name', max_length=255, blank=True,
                                  null=False)
    last_name = models.CharField('Last Name', max_length=255, blank=True,
                                 null=False)
    objects = UserManager()

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['username']

Das Benutzerprofilmodell ist wie folgt.

class UserProfile(models.Model):
    user = models.OneToOneField(User, related_name='profile', on_delete=models.CASCADE)
    avatar = models.ImageField(upload_to=avatar_image, blank=True, null=True)