Fatal error: Uncaught Error: Class 'Zend_Tool_Project_Context_Filesystem_Abstract' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Tool\Project\Context\Filesystem\File.php:39 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\Tool\Project\Context\Filesystem\File.php on line 39