Fatal error: Uncaught Error: Class 'Zend_View_Helper_Abstract' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Mantum\View\Helper\Url.php:11 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Mantum\View\Helper\Url.php on line 11