Select Class Error

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im try select Class But Get Error My Code:

require '../../Phper/Slcquery/vendor/autoload.php';
use Rct567\DomQuery\DomQuery;

$resp = "<div class='Test'> <a> Hello World </a> </div>";
 
    $dom = new DomQuery("<div>".$resp."</div>");

     $links = $dom->find('.Test');

     echo $links->html(); 
 

Fatal error: Uncaught Exception: Expression //.Test is malformed. in D:\Xampp\htdocs