Fatal error: Uncaught Error: Interface 'Zend_Cache_Backend_Interface' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Cache\Backend\ExtendedInterface.php:34 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Cache\Backend\ExtendedInterface.php on line 34