I am having problem on
php artisan voyager:install
There are no commands defined in the "storage" namespace.
php artisan serve
You are probably installing this on a version of Laravel 5.2 or earlier. Laravel 5.2 does not have the artisan command to create a symlink. Can you check your Laravel version :)
Solution also posted here: https://devdojo.com/forums/discussion/php/voyager-voyager-e-for-laravel-admin-panel-package-for-laravel