Django: невозможно войти в систему пользователю с правильным email/паролем

Я очень новичок в Django и это мой первый проект. Я пытаюсь создать простую систему входа/регистрации с MySQL в качестве базы данных и пользовательской моделью пользователя. Пользователь успешно регистрируется, но не может войти, используя правильный pw и email.

Я попробовал переделать мою функцию регистрации и индексную функцию (login) и изменил имя пользователя на email в моей пользовательской модели и индексной функции.

view.py:

from django.shortcuts import render, redirect
from django.contrib.auth import login, logout, authenticate
from django.shortcuts import render, redirect
from .models import CustomUser
from .forms import CustomUserCreationForm, EmailAuthenticationForm
from django.contrib.auth.forms import AuthenticationForm
from .backends import EmailBackend


# sign up
def signup(request):
    if request.user.is_authenticated:
        # if user is already logged in, redirect to the appropriate page
        return redirect('/home')
    if request.method == 'POST':
        form = CustomUserCreationForm(request.POST)
        if form.is_valid():
            user = form.save(commit=True)
            # Hash the password
            user.set_password(user.password)
            user.save()
    else:
        form = CustomUserCreationForm()
    return render(request, 'signup.html', {'form': form})



# login  
def index(request):
    if request.method == 'POST':
        form = EmailAuthenticationForm(data=request.POST)
        if form.is_valid():
            email = form.cleaned_data.get('username')
            password = form.cleaned_data.get('password')
            user = EmailBackend().authenticate(request, email=email, password=password)
            if user is not None:
                login(request, user)
                return redirect('home')
            else:
                return redirect('error')
    else:
        form = EmailAuthenticationForm()
    return render(request, 'index.html', {'form': form})

forms.py:

 from django import forms
 from django.contrib.auth.forms import UserCreationForm, AuthenticationForm
 from .models import CustomUser


# custom sign up form
class CustomUserCreationForm(UserCreationForm):
    first_name = forms.CharField(widget=forms.TextInput(attrs={'autofocus':'autofocus'}))
    email = forms.EmailField()
    class Meta(UserCreationForm):
        editable = True
        model = CustomUser
        fields = ('first_name', 'last_name', 'email')

# custom login form:
class EmailAuthenticationForm(AuthenticationForm):
    username = forms.EmailField(widget=forms.EmailInput(attrs={'autofocus': True}))
    # clean username function to make sure the username is an email
    def clean_username(self):
        username = self.cleaned_data.get('username')
        try:
            CustomUser.objects.get(email=username)
            return username
        except CustomUser.DoesNotExist:

models.py:

from django.db import models
from django.contrib.auth.models import AbstractBaseUser

# custom user model to include extra fields:
class CustomUser(AbstractBaseUser):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=30)
    email = models.EmailField(unique=True, max_length=255)
    is_staff = models.BooleanField(default=False)
    # keeps track of whether the account was confirmed or not thgough email confirmation
    is_active = models.BooleanField(default=True)
    REQUIRED_FIELDS = ['first_name', 'last_name']
    USERNAME_FIELD = 'email'
    # changed the default manager to the custom manager for login
    @classmethod
    def get__by_natural_key(cls, email):
        return cls.objects.get(email=email)

backends.py:

from django.contrib.auth.backends import BaseBackend
from django.contrib.auth.models import User
from .models import CustomUser

class EmailBackend(BaseBackend):
    def authenticate(self, request, email=None, password=None, **kwargs):
        try:
            user = CustomUser.objects.get(email=email)
        except CustomUser.DoesNotExist:
            return None
        if user.check_password(password):
            return user
    def get_user(self, user_id):
        try:
            return CustomUser.objects.get(pk=user_id)
        except CustomUser.DoesNotExist:
            return None

Все похожие сообщения, которые я нашел, касались сотрудников или администраторов.

def signup(request):
    if request.user.is_authenticated:
        # if user is already logged in, redirect to the appropriate page
        return redirect('/home')
    if request.method == 'POST':
        form = CustomUserCreationForm(request.POST)
        if form.is_valid():
            user = form.save()
            return redirect('name-of-some-view')
    else:
        form = CustomUserCreationForm()