Fatal error: Uncaught Error: Interface 'Zend_EventManager_EventCollection' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\EventManager\EventManager.php:40
Stack trace:
#0 {main}
  thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\Zend\EventManager\EventManager.php on line 40