when i enter the otp_code that comes from the create_otp_code definition it must show me a success message but it returns the below error
i have highlighted the line of error on views.py

you can find the django codes of the app here in below

view.py

from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login
from django.contrib.auth.decorators import login_required
from account.forms import CustomUserCreationForm, SignInForm
import random
from django.utils import timezone
from datetime import timedelta
from django.contrib import messages
from .models import *


# Create your views here.
def signup(request):
    global form
    if request.method == 'POST':
        form = CustomUserCreationForm(request.POST)
        if form.is_valid():
            user = form.save()
            login(request, user)
            return redirect('success_massage')
    else:
        form = CustomUserCreationForm()
    return render(request, 'account/signup.html', {'form': form})


def signin(request):
    if request.method == 'POST':
        getting_in = SignInForm(request.POST)
        if getting_in.is_valid():
            cd = getting_in.cleaned_data
            user = authenticate(username=cd['username'], password=cd['password'])
            if user is not None:
                login(request, user)
                return redirect('success_massage')

    else:
        getting_in = SignInForm()
        return render(request, 'account/signin.html', {'form': getting_in})


@login_required
def change_password(request):
    if request.method == 'POST':
        user = request.user
        password = request.POST.get('password')
        confirm_password = request.POST.get('confirm_password')
        if password == confirm_password:
            user.set_password(password)
            user.save()
            return redirect('success_massage')
        return render(request, 'change_password.html', {'form': change_password})


@login_required
def create_otp_code(request):
    if request.method == 'POST':
        code = random.randint(1000, 9999)
        OtpCode.objects.create(user=request.user, code=code)
        return redirect('enter_otp_code')

    return render(request, 'account/create_otp_code.html')

@login_required
def enter_otp_code(request):
    if request.method == 'POST':
        code = request.POST.get('otp_code')
        otp_object = OtpCode.objects.filter(user=request.user, code=code)
        if otp_object:
            **if timezone.now() - otp_object.created_at <= timedelta(minutes=5):**
                request.user.is_active = True
                request.user.save()
                otp_object.delete()
                return redirect('success_massage')
            else:
                otp_object.delete()
                messages.error(request, 'OTP code expired')
        else:
            messages.error(request, 'OTP code not found')

    return render(request, 'enter_otp_code.html')

urls.py

from django.urls import path
from .views import *
urlpatterns = [
    path('signup/', signup, name='signup'),
    path('signin/', signin, name='login'),
    path('change_password/', change_password, name='change_password'),
    path('create_otp_code', create_otp_code),
    path('enter_otp_code/', enter_otp_code,name='enter_otp_code'),
]

models.py

from django.db import models
from django.contrib.auth.models import AbstractBaseUser
from .managers import *
from random import randint


# Create your models here.

class User(AbstractBaseUser):
    email = models.EmailField(unique=True)
    phone_number = models.CharField(max_length=11, unique=True)
    joined = models.DateTimeField(auto_now_add=True)
    is_staff = models.BooleanField(default=False)
    is_active = models.BooleanField(default=False)

    objects = UserManager()
    USERNAME_FIELD = 'phone_number'
    REQUIRED_FIELDS = ['email']

    def has_perm(self, perm, obj=None):
        return True

    def has_module_perms(self, app_lable):
        return True

    def __str__(self):
        return self.phone_number


class OtpCode(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    code = models.IntegerField()
    created_at = models.DateTimeField(auto_now_add=True)

managers.py

from django.contrib.auth.models import BaseUserManager


class UserManager(BaseUserManager):
    def create_user(self, email, phone_number, password=None, ):
        if not email:
            raise ValueError('Users must have an email address')
        if not phone_number:
            raise ValueError('Users must have an phone number')
        email = self.normalize_email(email)
        user = self.model(email=email, phone_number=phone_number, password=password)
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, email, phone_number, password):
        if not phone_number:
            raise ValueError('Users must have an password')
        email = self.normalize_email(email)
        user = self.model(email=email, phone_number=phone_number, password=password)
        user.is_staff = True
        user.is_superuser = True
        user.is_active = True
        user.set_password(password)
        user.save(using=self._db)
        return user

app.py

from django.apps import AppConfig


class AccountConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'account'

i have re migrate the database…
i used the debug suggestions og pycharm however i have don’t know what to try