openclassify/addons/default/visiosoft/base-theme/resources/views/ad-detail/partials/slider.twig

<div class="col-md-7 slider-box">
    {% if blocks('ad-item-picture-block-area') is null %}
        <div class="fotorama"
             data-width="700"
             data-ratio="3/2"
             data-nav="thumbs"
             data-thumbheight="48">
            {% set advPhoto = '' %}
            {% if count(adv.files) == 0 %}
                {% set advPhoto = img('theme::images/no-image.png').url %}
                <a href="{{ image }}"><img src="{{ img('theme::images/no-image.png').url }}"></a>
            {% else %}
                {% for image in adv.getViewPhotoUrl %}
                    <a href="{{ image }}"><img src="{{ image }}"></a>
                    {% if loop.index == 1 %}
                        {% set advPhoto = image %}
                    {% endif %}
                {% endfor %}

            {% endif %}
        </div>
    {% else %}
        {{ blocks('ad-item-picture-block-area')  }}
    {% endif %}
</div>