Fatal error: Uncaught Error: Class 'Zend_View_Helper_Placeholder_Container_Standalone' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\Zend\View\Helper\HeadScript.php:43 Stack trace: #0 {main} thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\Zend\View\Helper\HeadScript.php on line 43