Admin Side Add Option Select Specific One Product Using ACF Post Object Field [ Select Product Id in ACF Field ] (Mega Menu Porduct Shortcode )

/* Mega Menu Porduct Shortcode */

function mega_menu_product()

{

$product_id = get_field('select_mega_menu_product','option');

if(empty($product_id)) return;

    

ob_start();

$product = wc_get_product( $product_id );

$img = $product->get_image();

$product_link = get_permalink($product_id);

    ?> 

<div class="cross-sells-box mega-menu-box">

<div class="cross-sells-wrapper">

<div class="cross-sells-left-image">

<a href="<?php echo $product_link; ?>">

<?php echo $img; ?>

</a>

</div>

<div class="cross-sells-right-content">

<div class="cross-sells-pro-title">

<a href="<?php echo $product_link; ?>">

<h4>

<?php echo $product->get_name(); ?>

</h4>

</a>

</div>

<div class="cross-sells-pro-desc">

<?php echo $product->get_short_description(); ?>

</div>

<div class="cross-sells-pro-price">

<?php echo $product->get_price_html(); ?>

<p>

<?php echo get_field('price_per_liter',$product_id); ?>

</p>

</div>

<div class="cross-sells-add-to-cart">

<a href="<?php echo $product_link; ?>" class="button">

Zum Produkt

</a>

</div>

</div>

</div>

</div>

<?php

    return ob_get_clean();

}

add_shortcode( 'mega_menu_product' , 'mega_menu_product' );