php - XPATH - Get src value of a image from an external webpage

one text

Using this code, I tried to retrieved the image from a web page. It worked for similar web pages but not for this link. As I'm new to scraping it somewhat hard to identify the issue.

       $doc = new DOMDocument;

       $doc->preserveWhiteSpace = false;
       $doc->strictErrorChecking = false;
       $doc->recover = true;
 
       ini_set('user_agent', 'My-Application/2.5');
       libxml_use_internal_errors(true);
       $doc->loadHTMLFile('https://www.net-a-porter.com/en-us/shop/product/veronica-beard/clothing/blouses/isabel-checked-cotton-blend-top/16114163150514635');
       $xpath = new DOMXPath($doc);
       $imgs  = $xpath->query('//*[@class="Image18__image Image18__image--undefined "]');
       foreach($imgs as $img)
       {
           echo 'ImgSrc: https:' . $img->getAttribute('src') .'<br />' . PHP_EOL;
       }

If dd($imgs) I get this,

DOMNodeList {#1795 ?�?
  +length: 0
}