do not try to access informationPopupData when it is null

templates/themes/kohinos/common/modale_info_for_users.html.twig

@@ -3,6 +3,7 @@
 <div class="modal fade" id="infoForUserModal" tabindex="-1" role="dialog" aria-labelledby="infoForUserModalTitle" aria-hidden="true">
   <div class="modal-dialog modal-dialog-centered" role="document">
     <div class="modal-content">
+      {% if informationPopupData %}
         <div class="modal-header">
           <h5 class="modal-title" id="infoForUserModalTitle">{{ informationPopupData.title }}</h5>
         </div>
@@ -13,6 +14,7 @@
           <a href='{{ path('set_user_validated_information_popup') }}' class="btn btn-primary">{{ informationPopupData.validationButtonText }}</a>
           <button type="button" class="btn btn-secondary" data-dismiss="modal">{{ informationPopupData.closingButtonText }}</button>
         </div>
+      {% endif %}
     </div>
   </div>
 </div>
\ No newline at end of file