fastapi-admin/fastapi_admin/templates/errors/maintenance.html

{% extends 'base.html' %}
{% block body %}
    <div class="page page-center">
        <div class="container-tight py-4">
            <div class="empty">
                <div class="empty-img"><img src="https://preview.tabler.io/static/illustrations/undraw_quitting_time_dm8t.svg" height="128"
                                            alt="">
                </div>
                <p class="empty-title">Temporarily down for maintenance</p>
                <p class="empty-subtitle text-muted">
                    Sorry for the inconvenience but we’re performing some maintenance at the moment. We’ll be back
                    online shortly!
                </p>
            </div>
        </div>
    </div>
{% endblock %}