Feedzy - link the read more button of imported posts to the original article

feedzy-link-post-read-more-to-original-article.php

<?php
/**
 * Plugin Name: Feedzy posts - link the read more button to the original article
 * Description: Link the read more button of posts imported by Feedzy to the original article
 * Version: 1.0
 * Author: Themeisle
 * Author URI: https://themeisle.com
 */

function new_excerpt_more($more) {
   $current_post_id = get_the_ID();
   $current_post_meta = get_post_meta($current_post_id);

   if (isset($current_post_meta['feedzy_item_url'][0])) {
      return ' <a href="' . $current_post_meta['feedzy_item_url'][0] . '">Read More</a>';
   }
   return $more;
}
add_filter('excerpt_more', 'new_excerpt_more');