How to display all portfolio projects of Unyson?

Question

HTML

It is not possible to display all portfolio projects on the Unyson plugin page. There is no portfolio icon in the page builder, how can I add it there? I tried to insert a function from the documentation on the page that displays a list of projects

<?php if ( have_posts() ) : ?>
    <?php while ( have_posts() ) : ?>
        <?php $gallery = fw_ext_portfolio_get_gallery_images(); ?>
        <ul class="gallery">
            <?php foreach( $gallery as $image ) : ?>
                <li>
                    <a href="<?php echo get_permalink($image['attachment_id'])?>">
                        <img src="<?php echo $image['url'] ?>" alt=""/>
                    </a>
                </li>
            <?php endforeach ?>
        </ul>
    <?php endwhile ?>
<?php endif ?>

It turns out an error, the function does not output and below nothing is displayed on the page after it.