Why does Google Search Console swear?

Question

Google

Website arthata.by
Why does Google Search Console swear?
Code Review Tab
Message - Missing field "itemReviewed"

<div id="simplerating" itemscope="" itemtype="http://schema.org/AggregateRating">
<meta itemprop="bestRating" content="5"/>
<meta itemprop="ratingValue" content="5.0000"/>
<meta itemprop="reviewCount" content="23898"/>
<span itemprop="name">Рейтинг студии Arthata.by</span>
<div id="sr-stars">
<i data-alt="1" class="star-on-png" title="плохо!"></i>
<i data-alt="2" class="star-on-png" title="не очень"></i>
<i data-alt="3" class="star-on-png" title="нормально"></i>
<i data-alt="4" class="star-on-png" title="хорошо"></i>
<i data-alt="5" class="star-on-png" title="отлично!"></i>
</div>
<div id="sr-count">23898 голосов</div>
</div>

Where is the mistake?
How to fix?

Answer 1

Well, there is no review field, add

Answer 2

If you go to the Google documentation and see examples, I think everything will become clear to you.