Fatal error: Uncaught Error: Interface 'Zend_Pdf_ElementFactory_Interface' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Pdf\ElementFactory\Proxy.php:33 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Pdf\ElementFactory\Proxy.php on line 33