Invalid filter: 'intcomma' What's the problem?

Question

Django

Created a page template in django-admin.

{% extends "admin/change_list.html" %}
{% block content_title %}
    <h1> Sales Summary </h1>
{% endblock %}
{% block result_list %}
    <div class="results">
        <table>
            <thead>
                <tr>
                    <th>
                        <div class="text">
                            <a href="#">Category</a>
                        </div>
                    </th>
                    <th>
                        <div class="text">
                            <a href="#">Total</a>
                        </div>
                    </th>
                    <th>
                        <div class="text">
                            <a href="#">Total Orders</a>
                        </div>
                    </th>
                    <th>
                        <div class="text">
                            <a href="#"><strong>% Of Total Orders</strong></a>
                        </div>
                    </th>
                </tr>
            </thead>

            <tbody>
                {% for row in summary %}
                <tr class="{% cycle 'row1' 'row2' %}">
                    <td> {{ row.sale__category__name }} </td>
                    <td> {{ row.total |intcomma }} </td>
                    <td> {{ row.total_sales | default:0 |intcomma }}$ </td>
                    <td>
                        <strong>
                            {{ row.total_sales |
                                default:0 |
                                percentof:summary_total.total_sales }}
                        </strong>
                    </td>
                </tr>
                {% endfor %}
            </tbody>

        </table>
    </div>
{% endblock %}
{% block pagination %}{% endblock %}

When trying, it gives a syntax error: Invalid filter: 'intcomma'. What is the problem? I read the documentation, it's easy to use.