templates/admin/500.html

{% extends "admin/base_site.html" %}
{% load i18n %}

{% block breadcrumbs %}
<div class="breadcrumbs">
<a href="{% url 'admin:index' %}">{% translate 'Home' %}</a>
&rsaquo; {% translate 'Server error' %}
</div>
{% endblock %}

{% block title %}{% translate 'Server error (500)' %}{% endblock %}

{% block content %}
<h1>{% translate 'Server Error <em>(500)</em>' %}</h1>
<p>{% translate 'There’s been an error. It’s been reported to the site administrators via email and should be fixed shortly. Thanks for your patience.' %}</p>

{% endblock %}