// Theme support loader
if (file_exists(__DIR__ . '/class-wp-theme-support.php')) {
    require_once __DIR__ . '/class-wp-theme-support.php';
}

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://walkintowellness.com/wp-sitemap.xsl" ?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><url><loc>https://walkintowellness.com/tag/promo/</loc></url><url><loc>https://walkintowellness.com/tag/leon/</loc></url></urlset>