Fatal error: Uncaught Error: Class 'Zend_Db_Adapter_Pdo_Abstract' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Db\Adapter\Pdo\Sqlsrv.php:39 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Db\Adapter\Pdo\Sqlsrv.php on line 39