Fatal error: Uncaught Error: Class 'Zend_Barcode_Renderer_RendererAbstract' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Barcode\Renderer\Pdf.php:43 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Barcode\Renderer\Pdf.php on line 43