{% if reserch_list %}  
    {% set i = 1 %}
    Researchers: 
    {% for key, entitys  in reserch_list %}
        <a class="nav-link-team-p" href="{{path('researches', {'slug': key})}}">{{entitys.name}}</a>{% if i < countres%}, {% endif %}    
    {% set i = i+1 %}    
    {% endfor %}
{% endif %}