ACF Embedded repeater

<div class="project-buttons">
    <ul class="btn-list">
<?php

if( have_rows('project_type') ):
    while( have_rows('project_type') ) : the_row();

        $project_title = get_sub_field('project_type_title'); ?>
        
        <h2 class="wp-block-heading"><strong><?= $project_title ?></strong></h2>

        <?php if( have_rows('project_type_repeater') ):
            while( have_rows('project_type_repeater') ) : the_row();
        
                $pdf_title = get_sub_field('title');
                $pdf_subtitle = get_sub_field('subtitle');
                $pdf_file = get_sub_field('file'); ?>
                
                <li class="btn-list-item">
                    <a class="btn-pdf" href="<?php echo esc_url($pdf_file); ?>" target="_blank" rel="noopener noreferrer">
                        <div class="btn-pdf-inner">
                            <h3 class="btn-pdf-title"><?php echo esc_html($pdf_title); ?></h3>
                            <p class="btn-pdf-subtitle"><?php echo esc_html($pdf_subtitle); ?></p>
                        </div>
                    </a>
                </li>
            <?php 
            endwhile;
        endif;

    endwhile;
endif;
?>
    </ul>
</div>