Fatal error: Uncaught Error: Class 'Zend_Service_Amazon_Authentication' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Service\Amazon\Authentication\V2.php:39
Stack trace:
#0 {main}
  thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Service\Amazon\Authentication\V2.php on line 39