Validation errors occurred

Hi!
Got mesage “Validation errors occurred. Please confirm the fields and submit it again” while testing feedback form on my second email.

Here is my contact form:

<div class="request_callback">
   <p>Мне необходима консультация по следующему вопросу:</p>
    <div class="row">
        <div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
            <div class="input-group">
                [select* services_consulting first_as_label "Пресейл" "Проектная поддержка" "Консалтинг" "Анализ рынка" "Разработка продуктов"]
            </div>
        </div>
        <div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
            <div class="input-group">
                [text* your-name akismet:author placeholder "Имя"]
            </div>
        </div>
        <div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
            <div class="input-group">
                [email* your-email akismet:author_email placeholder "E-mail"]
            </div>
        </div>

 <div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
            <div class="input-group">
                [text* your-company placeholder "Компания"]
            </div>
        </div>

 <div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
    <div class="input-group">
            [textarea* your-message class:height100 placeholder "Сообщение"]
             </div>
        </div>

        <div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
            <div class="input-group">
                <button type="submit" class="button size-lg icon_right">submit <i class="fa fa-chevron-right"></i></button>
            </div>
        </div>
    </div>
</div>