Fatal error: Uncaught Error: Interface 'Zend_Db_Statement_Interface' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\Zend\Test\DbStatement.php:37 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\Zend\Test\DbStatement.php on line 37