.issue(':notempty:') - FILTER ONLY NON-EMPTY ENTRIES

// FILTER ONLY NON-EMPTY ENTRIES
{% set searchQuery = craft.app.request.queryParam('q') %}

{% if searchQuery == '' %}
  {% set searchResults = [] %}
{% else%}
  {% set searchResults = craft.entries()
    .section('articles')
    .type('article')
    .issue(':notempty:')⬅️⬅️⬅️
    .search(searchQuery)
    .orderBy('score')
    .cache()
    .all()
   %}
 {% endif %}