I'm using laravel 5 with a Homestead box using vagrant and virtualbox for this, as demonstrated in the framework documentation:
Permission denied
I ran the commands from my Homestead: sudo chmod 777 -R <projeto>
but did not succeed.
In fact, you only need to set the storage folder. Within your project:
chmod 744 storage
ps: Are you sure you're really using the Homeastead way? This path looks different.