ACF Relationship

add_filter( 'woocommerce_product_tabs', 'edscom_savmestimi_produkti_tab' );
function edscom_savmestimi_produkti_tab( $tabs ) {
    global $post;
    $my_savmestimi_produkti = get_field( 'savmestimi_produkti', );
    if( ! empty( $my_savmestimi_produkti )) {
// Adds the new tab
    $tabs['savmestimi-produkti'] = array (
        'title'     => __( 'Съвместими продукти', 'woocommerce' ),
        'priority'  => 12,
        'callback'  => 'edscom_savmestimi_produkti_tab_content'
    );
    }
    return $tabs;
}
function edscom_savmestimi_produkti_tab_content() {
    $the_articles = get_field('savmestimi_produkti');
    if( $the_articles ): ?>
        <div class="tab-savmestimi">
        <ul style="list-style-type: none; padding-left: 15px;">
        <?php foreach( $the_articles as $article ): ?>
            <li>

                <a href="<?php echo get_permalink($article->ID); ?>" title="<?php echo __('Още за ') . ' ' . $article->post_title; ?>" target="_blank">
                <img width="50" height="50" class="img_tsprod" src="<?php echo get_the_post_thumbnail_url( $article->ID ); ?>">
                <?php echo $article->post_title; ?>
                </a>
        </li>
        <?php endforeach; ?>
    </ul>
    </div>
<?php endif;
}