cookiecutter-django/{{cookiecutter.project_slug}}/{{cookiecutter.project_slug}}/templates/404.html

{% raw %}{% extends "base.html" %}

{% block title %}Page not found{% endblock title %}
{% block content %}
  <h1>Page not found</h1>
  <p>
    {% if exception %}
      {{ exception }}
    {% else %}
      This is not the page you were looking for.
    {% endif %}
  </p>
{% endblock content %}
{%- endraw %}