Submit a form with an attachment

3 hrs and solution is here.

user\plugins\form\templates\forms\default\data.html.twig

From:

{% for val in value %}
    {% if val is iterable %}
          <ul>
                 {% for v in val %}
                         <li>{{ string(v)|e }}</li>
                 {% endfor %}
          </ul>
    {% else %}
          <li>{{ string(val)|e }}</li>
    {% endif %}
{% endfor %}

Edit to this:

{% for val in value %}
           {% if val is iterable %}
                 <ul>
		 {% for item in form.value(field.name) %}
		        <li><a href="**SITE_URL**{{ string(item.path) }}">{{ item.name }}</a></li>
	         {% endfor %}
           </ul>
          {% else %}
         <li>{{ string(form.value(field.name))|nl2br }}</li>
   {% endif %}
{% endfor %}

I find solution here: Contact form and file upload - display images in data.{html|text}.twig

But have a one other problem, the files show cicling whan you add more that one file.
I try to find solution for this.