SovBundle/Resources/views/adminlte/crud/field/file.html.twig

{% if field.value is not null and field.value.path is not null %}
    <a href="{{ asset(field.value.path) }}" class="" title="{{ field.value.legend }}">
        Télécharger
    </a>
{% else %}
    <div class="badge badge-secondary">Aucun(e)</div>
{% endif %}