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I have a notification from Google Search Console that there are errors and missing  "ratingCount" or "reviewCount" and "ratingValue"

I checked and the case concerns the "productcomments" module. On the right side, rated products are displayed.
Unrated products display incorrectly.

How to change that?

My /public_html/modules/productcomments/productcomments.tpl ist:

{*
* 2007-2014 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2014 PrestaShop SA
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*}
<script type="text/javascript">
   var productcomments_controller_url = '{$productcomments_controller_url}';
   var confirm_report_message = '{l s='Are you sure that you want to report this comment?' mod='productcomments' js=1}';
   var secure_key = '{$secure_key}';
   var productcomments_url_rewrite = '{$productcomments_url_rewriting_activated}';
   var productcomment_added = '{l s='Your comment has been added!' mod='productcomments' js=1}';
   var productcomment_added_moderation = '{l s='Your comment has been submitted and will be available once approved by a moderator.' mod='productcomments' js=1}';
   var productcomment_title = '{l s='New comment' mod='productcomments' js=1}';
   var productcomment_ok = '{l s='OK' mod='productcomments' js=1}';
   var moderation_active = {$moderation_active};
</script>
<div id="product_comments_block_tab">
  {if $comments}
  {foreach from=$comments item=comment}
  {if $comment.content}
  <div class="comment clearfix">
     <div class="comment_author">
        <span>{l s='Grade' mod='productcomments'}&nbsp</span>
        <div class="star_content clearfix">
           {section name="i" start=0 loop=5 step=1}
           {if $comment.grade le $smarty.section.i.index}
           <div class="star"></div>
           {else}
           <div class="star star_on"></div>
           {/if}
           {/section}
        </div>
        <div class="comment_author_infos">
           <strong>{$comment.customer_name|escape:'html':'UTF-8'}</strong>
           <em>{dateFormat date=$comment.date_add|escape:'html':'UTF-8' full=0}</em>
        </div>
     </div>
     <div class="comment_details">
        {*<h4 class="title_block">{$comment.title}</h4>*}
        <p>{$comment.content|escape:'html':'UTF-8'|nl2br}</p>
        <ul>
           {if $comment.total_advice > 0}
           <li>{l s='%1$d out of %2$d people found this review useful.' sprintf=[$comment.total_useful,$comment.total_advice] mod='productcomments'}</li>
           {/if}
           {if $logged}
           {if !$comment.customer_advice}
           <li>{l s='Was this comment useful to you?' mod='productcomments'}<button class="usefulness_btn" data-is-usefull="1" data-id-product-comment="{$comment.id_product_comment}">{l s='yes' mod='productcomments'}</button><button class="usefulness_btn" data-is-usefull="0" data-id-product-comment="{$comment.id_product_comment}">{l s='no' mod='productcomments'}</button></li>
           {/if}
           {if !$comment.customer_report}
           <li><span class="report_btn" data-id-product-comment="{$comment.id_product_comment}">{l s='Report abuse' mod='productcomments'}</span></li>
           {/if}
           {/if}
        </ul>
     </div>
  </div>
  {/if}
  {/foreach}
  {if (!$too_early AND ($logged OR $allow_guests))}
  <p class="align_center">
     <a id="new_comment_tab_btn" class="open-comment-form btn btn-secondary" >{l s='Write your review' mod='productcomments'} !</a>
  </p>
  {/if}
  {else}
  {if (!$too_early AND ($logged OR $allow_guests))}
  <p class="align_center">
     <a id="new_comment_tab_btn" class="btn btn-secondary" data-toggle="modal" data-target="#myModal">{l s='Be the first to write your review' mod='productcomments'} !</a>
  </p>
  {else}
  <p class="align_center">{l s='No customer reviews for the moment.' mod='productcomments'}</p>
  {/if}
  {/if}    
</div>
{if isset($product) && $product}
<div class="container">
   <!-- Trigger the modal with a button -->
   <!-- Modal -->
   <div class="modal fade" id="myModal" role="dialog">
      <div class="modal-dialog">
         <!-- Modal content-->
         <div class="modal-content">
            <div class="modal-body">
               <div id="new_comment_form">
                  <form id="id_new_comment_form" action="#">
                     <h2 class="title">{l s='Write your review' mod='productcomments'}</h2>
                     {if isset($product) && $product}
                     <div class="product clearfix col-xs-12 col-sm-6">
                        <img src="{$productcomment_cover_image}" alt="{$product->name|escape:html:'UTF-8'}" />
                        <div class="product_desc">
                           <p class="product_name"><strong>{$product->name}</strong></p>
                           {$product->description_short nofilter}
                        </div>
                     </div>
                     {/if}
                     <div class="new_comment_form_content col-xs-12 col-sm-6">
                        <h2>{l s='Write your review' mod='productcomments'}</h2>
                        <div id="new_comment_form_error" class="error" style="display:none;padding:15px 25px">
                           <ul></ul>
                        </div>
                        {if $criterions|@count > 0}
                        <ul id="criterions_list">
                           {foreach from=$criterions item='criterion'}
                           <li>
                              <label>{$criterion.name|escape:'html':'UTF-8'}</label>
                              <div class="star_content">
                                 <input class="star" type="radio" name="criterion[{$criterion.id_product_comment_criterion|round}]" value="1" />
                                 <input class="star" type="radio" name="criterion[{$criterion.id_product_comment_criterion|round}]" value="2" />
                                 <input class="star" type="radio" name="criterion[{$criterion.id_product_comment_criterion|round}]" value="3" />
                                 <input class="star" type="radio" name="criterion[{$criterion.id_product_comment_criterion|round}]" value="4" />
                                 <input class="star" type="radio" name="criterion[{$criterion.id_product_comment_criterion|round}]" value="5" checked="checked" />
                              </div>
                              <div class="clearfix"></div>
                           </li>
                           {/foreach}
                        </ul>
                        {/if}
                        <label for="comment_title">{l s='Title for your review' mod='productcomments'}<sup class="required">*</sup></label>
                        <input id="comment_title" name="title" type="text" value=""/>
                        <label for="content">{l s='Your review' mod='productcomments'}<sup class="required">*</sup></label>
                        <textarea id="content" name="content"></textarea>
                        {if $allow_guests == true && !$logged}
                        <label>{l s='Your name' mod='productcomments'}<sup class="required">*</sup></label>
                        <input id="commentCustomerName" name="customer_name" type="text" value=""/>
                        {/if}
                        <div id="new_comment_form_footer">
                           <input id="id_product_comment_send" name="id_product" type="hidden" value='{$id_product_comment_form}' />
                           <p class="fl required"><sup>*</sup> {l s='Required fields' mod='productcomments'}</p>
                           <p class="fr">
                              <button id="submitNewMessage" class ="btn btn-secondary" name="submitMessage" type="submit">{l s='Send' mod='productcomments'}</button>
                               
                            {l s='or' mod='productcomments'} 
                           <button type="button" class="closefb btn btn-secondary" data-dismiss="modal" aria-label="Close">
                              <span aria-hidden="true">{l s='Cancel' mod='productcomments'}</span>
                            </button>
                           </p>
                           <div class="clearfix"></div>
                        </div>
                     </div>
                  </form>
                  <!-- /end new_comment_form_content -->
               </div>
            </div>
         </div>
      </div>
   </div>
   <div class="modal fade" id="result_comment" role="dialog">
      <div class="modal-dialog">
         <div class="modal-content">
            <div class="modal-body">
               <h2>{l s='Your comment is submitted' mod='productcomments'}</h2>
            </div>
         </div>
      </div>
   </div>
</div>
<!-- End fancybox -->
{/if}