"Read more" link to post excerpts of custom post types

functions.php

/**
 * Adds a custom "Read more" link to post excerpts of custom post types.
 * Replaces "[...]" (appended to automatically generated excerpts) with an ellipsis and "Read more".
 *
 * https://www.nuno-sarmento.com
*/

function ns_cpt_excerpt_more( $more ) {
    global $post;
    $anchor_text = 'Read more';
    if ( 'YOUR_CUSTOM_POST_TYPE_NAME' == $post->post_type ) {
        $more = ' &hellip; <a href="'. esc_url( get_permalink() ) . '">' . $anchor_text . '</a>';
    }
    return $more;
}
add_filter('excerpt_more', 'ns_cpt_excerpt_more');