Fatal error: Uncaught Error: Class "PHPUnit_Framework_Comparator_Object" not found in C:\xampp\htdocs\php\pear\PHPUnit\Framework\Comparator\DOMDocument.php:57 Stack trace: #0 {main} thrown in C:\xampp\htdocs\php\pear\PHPUnit\Framework\Comparator\DOMDocument.php on line 57