django user model error: Hello friends, I keep getting this error; "accounts.User.groups: (fields.E304) Reverse accessor for 'User.groups' clashes with reverse accessor for 'User.groups'. Please help

from django.contrib.auth.models import AbstractUser
from django.core.validators import (
    MinValueValidator,
    MaxValueValidator,
    RegexValidator
)
from django.db import models
from django.utils.translation import ugettext_lazy as _

from .managers import UserManager


class User(AbstractUser):
    username = models.CharField(
        _('username'), max_length=30, unique=True, null=True, blank=True,
        help_text=_(
            'Required. 30 characters or fewer. Letters, digits and '
            '@/./+/-/_ only.'
        ),
        validators=[
            RegexValidator(
                r'^[\w.@+-]+$',
                _('Enter a valid username. '
                    'This value may contain only letters, numbers '
                    'and @/./+/-/_ characters.'), 'invalid'),
        ],
        error_messages={
            'unique': _("A user with that username already exists."),
        })

    email = models.EmailField(unique=True, null=False, blank=False)
    contact_no = models.IntegerField(unique=True, blank=True, null=True)

    objects = UserManager()

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

    def __str__(self):
        return self.email

    @property
    def account_no(self):
        if hasattr(self, 'account'):
            return self.account.account_no
        return None

    @property
    def full_name(self):
        return '{} {}'.format(self.first_name, self.last_name)

    @property
    def balance(self):
        if hasattr(self, 'account'):
            return self.account.balance
        return None

    @property
    def full_address(self):
        if hasattr(self, 'address'):
            return '{}, {}-{}, {}'.format(
                self.address.street_address,
                self.address.city,
                self.address.postal_code,
                self.address.country,
            )
        return None


class AccountDetails(models.Model):
    GENDER_CHOICE = (
        ("M", "Male"),
        ("F", "Female"),
    )
    user = models.OneToOneField(
        User,
        related_name='account',
        on_delete=models.CASCADE,
    )
    account_no = models.PositiveIntegerField(
        unique=True,
        validators=[
            MinValueValidator(10000000),
            MaxValueValidator(99999999)
        ]
    )
    gender = models.CharField(max_length=1, choices=GENDER_CHOICE)
    birth_date = models.DateField(null=True, blank=True)
    balance = models.DecimalField(
        default=0,
        max_digits=12,
        decimal_places=2
    )
    picture = models.ImageField(
        null=True,
        blank=True,
        upload_to='account_pictures/',
    )

    def __str__(self):
        return str(self.account_no)


class UserAddress(models.Model):
    user = models.OneToOneField(
        User,
        related_name='address',
        on_delete=models.CASCADE,
    )
    street_address = models.CharField(max_length=512)
    city = models.CharField(max_length=256)
    postal_code = models.PositiveSmallIntegerField()
    country = models.CharField(max_length=256)

    def __str__(self):
        return self.user.email

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at https://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/2a43175d-5279-401a-a97d-6b1036f1ca52%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.