Django forms.py и Join.html не выводят ошибки формы

Я видел много руководств по этому вопросу (я новичок в Django), и единственная проблема, которую я смог найти - raise form.Validation("...") не отображалась в моем HTML-шаблоне и не останавливала отправку формы.

Я перепробовал множество вариантов, включая AI, но все равно столкнулся с теми же проблемами. Если я допустил глупую ошибку, пожалуйста, укажите на нее, чтобы я знал на следующий раз, этот код - просто мой проект, чтобы я мог научиться кодировать Django.

HTML:

        <form id="form" action="" method="post" name="form">
            {% csrf_token %}
            <div class="input-control">
                {% if form.non_field_errors %}
                    <div class="error">{{ form.non_field_errors }}</div>
                {% endif %}

                {% if form.errors %}
                    <div class="error">{{ form.errors }}</div>
                {% endif %}

                <div class="username">
                    <label for="{{ form.username.id_for_label }}" class="label">{{ form.username.label }}</label>
                    {{ form.username }}  <!-- Render the input field -->
                    {% for error in form.username.errors %}
                        <div class="error">{{ error }}</div>
                    {% endfor %}
                </div>
        
                <div class="email">
                    <label for="{{ form.email.id_for_label }}" class="lemail">{{ form.email.label }}</label>
                    {{ form.email }}
                    {% for error in form.email.errors %}
                        <div class="error">{{ error }}</div>
                    {% endfor %}
                </div>
        
                <div class="password">
                    <label for="{{ form.password.id_for_label }}" class="label">{{ form.password.label }}</label>
                    {{ form.password }}
                    {% for error in form.password.errors %}
                        <div class="error">{{ error }}</div>
                    {% endfor %}
                </div>
        
                <div class="repassword">
                    <label for="{{ form.repassword.id_for_label }}" class="label">{{ form.repassword.label }}</label>
                    {{ form.repassword }}
                    {% for error in form.repassword.errors %}
                        <div class="error">{{ error }}</div>
                    {% endfor %}
                </div>
        
                <button id="nextButton" class="nextButton" type="submit">
                    <span class="material-symbols-outlined">arrow_circle_right</span>
                </button>
            </div>
        </form>

Forms.py:

from django import forms
from django.contrib.auth.models import User

class JoinForm(forms.Form):
    username = forms.CharField(
        validators=['clean_username'],
        widget=forms.TextInput(attrs={
            'id': "usernameId",
            'name': "username",
            'type': "text",
            'placeholder': "username",
            'autocomplete': "username",
            'maxlength': 64,
            'required': True,   
        }),
        label='Username'
    )
    email = forms.EmailField(
        validators=['clean_email'],
        widget=forms.EmailInput(attrs={
            'id': "emailId",
            'name': "email", 
            'type': "text", 
            'placeholder': "email" ,
            'autocomplete': "email", 
            'maxlength': 256, 
            'required': True,
        }),
        label='Email'
    )
    password = forms.CharField(
        validators=['clean_password'],
        widget=forms.PasswordInput(attrs={
            'id': "passwordId", 
            'name': "password", 
            'type': "password", 
            'placeholder': "password", 
            'autocomplete': "new-password", 
            'maxlength': 127, 
            'required': True,
        }),
        label='Password'
    )
    repassword = forms.CharField(
        validators=['clean_repassword'],
        widget=forms.PasswordInput(attrs={
            'id': "repasswordId", 
            'name': "repassword",
            'type': "password",
            'placeholder': "re-confirm password", 
            'maxlength': 127, 
            'required': True,
        }),
        label='Password'
    )

    def clean_username(self):
        print("Cleaning username")
        username = self.cleaned_data.get('username')
        if username and User.objects.filter(username=username).exists():
            raise forms.ValidationError("Username already exists.")
        return username

    def clean_email(self):
        print("Cleaning email")
        email = self.cleaned_data.get('email')
        if email and '@example.com' in email:
            raise forms.ValidationError("Email from example.com is not allowed.")
        elif email and User.objects.filter(email=email).exists():
            raise forms.ValidationError("Email already exists.")
        return email

    def clean_password(self):
        print("Cleaning password")
        password = self.cleaned_data.get('password')
        if password and len(password) < 8:
            raise forms.ValidationError("Password must be at least 8 characters")
        return password

    def clean_repassword(self):
        print("Cleaning repassword")
        repassword = self.cleaned_data.get('repassword')
        password = self.cleaned_data.get('password')
        if repassword != password:
            raise forms.ValidationError("Passwords do not match")
        return repassword

views.py:

from django.shortcuts import render, redirect
from .forms import JoinForm
from django.contrib.auth import login, logout
from django.http import HttpResponse, HttpRequest, HttpResponseRedirect, JsonResponse
from django.contrib.auth.models import User
from django.contrib.auth.views import LogoutView, LoginView 
from django.urls import reverse_lazy
import json


def index(request):
    return render(request, 'Index.html')

def create_user(request):
    # if User.objects.exists():
    #   return redirect('index')
    if request.method == 'POST':
        form = JoinForm(request.POST)
        if form.is_valid():
            # Extract cleaned data
            username = form.cleaned_data['username']
            password = form.cleaned_data['password']
            email = form.cleaned_data['email']

            # Create the user
            user = User.objects.create_user(username=username, password=password, email=email)
            user.save()

            # Log the user in
            login(request, user)

            # Redirect to success page
            return redirect('send_call')
        else:
            return redirect('create_user')
    else:
        form = JoinForm()

    # For GET requests, render the Join.html page
    return render(request, 'Join.html', {'form': form})

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