login_user issue when Sign Up on Django

I wrote some code for Register step, i made all the verification on my code in models.py, forms.py, views.py but when i try to signup i have an error i can't register the data in my database(postgresql)/

And i verified, there is non "login_user" in my code

my app is called login.

So this is my /login/models.py code:

from django.db import models
from django.core.validators import RegexValidator
from django.contrib.auth.models import AbstractUser, PermissionsMixin
# Create your models here.

class User(AbstractUser, PermissionsMixin):
     first_name = models.CharField(max_length=50)
     last_name = models.CharField(max_length=50)
     otp = models.IntegerField(null=True)
     phone_regex = RegexValidator(regex=r'^[+][3][3][6-7][0-9]{8}$',
          message="Le numéro de téléphone doit être au format: +33xxxxxxxxx\
               '0622920182 devient +33622920182'")
     phone = models.CharField(validators=[phone_regex], max_length=12)
     is_staff = models.BooleanField(default=False)
     is_active = models.BooleanField(default=False)
     is_superuser = models.BooleanField(default=False)


     def __str__(self):
        return self.username

This is the error i have : ERREUR: la relation « login_user » n'existe pas LINE 1: SELECT (1) AS "a" FROM "login_user" WHERE "login_user"."user...