Woocommerce custom product loop no longer working after update - wordpress

Question

I'm having an issue with a custom product loop for featured products. It worked fine before a update.
<?php
$args = array(
'post_type' => 'product',
'posts_per_page' => 4,
'tax_query' => array(
array(
'taxonomy' => 'product_visibility',
'field' => 'name',
'terms' => 'featured',
),
),
);
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post();
global $product;
$currency = get_woocommerce_currency_symbol();
$price = get_post_meta( get_the_ID(), '_regular_price', true);
$sale = get_post_meta( get_the_ID(), '_sale_price', true);
if($sale) {
echo '
<div class="pickproductsitem">
<div class="pickprodimage" style="background-image: url(' . get_the_post_thumbnail_url() . ');"></div>
<div class="prodname">'.get_the_title().'</div>
<div class="prodinfo">'. get_the_excerpt() .'</div>
<div class="prodprice"><span style="text-decoration: line-through;">Only '.$currency.$price.'</span><span style="color: green;"> SALE '.$currency.$sale.'</span></div>VIEW</div>';
}
elseif($price)
{
echo '
<div class="pickproductsitem">
<div class="pickprodimage" style="background-image: url(' . get_the_post_thumbnail_url() . ');"></div>
<div class="prodname">'.get_the_title().'</div>
<div class="prodinfo">'. get_the_excerpt() .'</div>
<div class="prodprice">Only '.$currency.$price.'</div>VIEW</div>';
}
endwhile;
wp_reset_query();
?>
I've tried fixing the Permalinks but it hasn't sorted the issue. I'm no expert at Woo or even Wordpress but this loop did work.
Thank you for any help.

Answer 1

If you want to display featured products then do use below code in your query args it will solve the issue.
<?php
$meta_query = WC()->query->get_meta_query();
$meta_query[] = array(
'key' => '_featured',
'value' => 'yes'
);
$args = array(
'post_type' => 'product',
'posts_per_page' => 4,
'meta_query' => $meta_query
);
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post();
global $product;
$currency = get_woocommerce_currency_symbol();
$price = get_post_meta( get_the_ID(), '_regular_price', true);
$sale = get_post_meta( get_the_ID(), '_sale_price', true);
if($sale) {
echo '
<div class="pickproductsitem">
<div class="pickprodimage" style="background-image: url(' . get_the_post_thumbnail_url() . ');"></div>
<div class="prodname">'.get_the_title().'</div>
<div class="prodinfo">'. get_the_excerpt() .'</div>
<div class="prodprice"><span style="text-decoration: line-through;">Only '.$currency.$price.'</span><span style="color: green;"> SALE '.$currency.$sale.'</span></div>VIEW</div>';
}
elseif($price)
{
echo '
<div class="pickproductsitem">
<div class="pickprodimage" style="background-image: url(' . get_the_post_thumbnail_url() . ');"></div>
<div class="prodname">'.get_the_title().'</div>
<div class="prodinfo">'. get_the_excerpt() .'</div>
<div class="prodprice">Only '.$currency.$price.'</div>VIEW</div>';
}
endwhile;
wp_reset_query();
?>