Make a new file in fuel/app/tasks with the name queue.php on your application with the follow code:
<?php
\Package::load('queue');
include_once PKGPATH . 'queue/tasks/queue.php';
<?phpwhich indicates it is a Fuel package, otherwise you don't need this code?
\Package::load('queue');
include_once PKGPATH . 'queue/tasks/queue.php';
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