Странно, теперь я вижу новую строку в коде
<div id="multiattaches" class="multiattaches">
<div class="multiattaches__content multiattaches__content_hidden" id="attachesContent">
<div class="multiattaches__title">Attached files</div>
<div class="multiattaches__clear" id="attachesClearContent">Delete all</div>
<ol class="multiattaches__list" id="attachesList" style="max-height: 376px;"><li id="at_1" class="multiattaches__item multiattaches__item_hidden"><input type="file" name="attachedFile" size="63" class="multiattaches__input" id="_1" accept=".zip,.txt,.log,.mqh,.ex5,.mq5,.mq4,.ex4,.mt5,.set,.tpl,.cl,.py,.sqlite,.csv,.ipynb,.gif,.png,.jpg,.jpeg"><div class="multiattaches__extension"></div><div class="multiattaches__desc"><div class="multiattaches__name"></div><div class="multiattaches__size"></div></div><div class="multiattaches__delete" title="delete" data-num="1"></div></li></ol>
</div>
<div id="newAttachesLink" class="multiattaches__button" title="Attach a file">
<i class="multiattaches__icon_attach"></i><span class="multiattaches__button__text">Attach</span>
</div>
<div class="multiattaches__count-attaches multiattaches__count-attaches_hidden" id="attachesCount">
Files: <span id="attachesCountValue">0</span>
</div>
<p id="newAttaches_info" class="new-attaches__info">Attach up to 32 files maximum 16 Mb per upload (.zip .txt .log .mqh .ex5 .mq5 .mq4 .ex4 .mt5 .set .tpl .cl .py .sqlite .csv .ipynb .gif .png .jpg .jpeg)</p>
</div>
Эта
<li id="at_1" class="multiattaches__item multiattaches__item_hidden"><input type="file" name="attachedFile" size="63" class="multiattaches__input" id="_1" accept=".zip,.txt,.log,.mqh,.ex5,.mq5,.mq4,.ex4,.mt5,.set,.tpl,.cl,.py,.sqlite,.csv,.ipynb,.gif,.png,.jpg,.jpeg"><div class="multiattaches__extension"></div><div class="multiattaches__desc"><div class="multiattaches__name"></div><div class="multiattaches__size"></div></div><div class="multiattaches__delete" title="delete" data-num="1"></div></li>
И она содержит необходимый элемент для работы селена