Override Yoast SEO Breadcrumb Trail

wpseo_breadcrumb_links.php

see @ http://wordpress.stackexchange.com/questions/100012/how-to-add-a-page-to-the-yoast-breadcrumbs
/**
 * Conditionally Override Yoast SEO Breadcrumb Trail
 * http://plugins.svn.wordpress.org/wordpress-seo/trunk/frontend/class-breadcrumbs.php
 * -----------------------------------------------------------------------------------
 */
add_filter( 'wpseo_breadcrumb_links', 'wpse_100012_override_yoast_breadcrumb_trail' );
function wpse_100012_override_yoast_breadcrumb_trail( $links ) {
    global $post;

    if ( is_singular() ) {

        $breadcrumb[] = array(
            'url' => get_permalink( 29 ),
            'text' => 'About Us',
        );

        array_splice( $links, 0, -1, $breadcrumb );

        $breadcrumb[] = array(
            'url' => get_permalink( 39 ),
            'text' => 'Team Members',
        );

        array_splice( $links, 0, -1, $breadcrumb );

    }

    return $links;
}

This causes errors on PHP 7.2+
class-breadcrumbs.php:456 ->Warning count(): Parameter must be an array or an object that implements Countable

How do I add two links to the trail? For example /about-us/podcasts/postcast-title? I can add one (podcasts), but I'm not sure how to add both /about-us/podcasts/ - any ideas?