If it has been a while since you set up the Laravel Homestead Vagrant you may have forgotten how to add new sites. Or maybe you have added new sites but they are not working. Below are the steps that always work for me on the Mac.
Open terminal then the Homestead.yaml file with your editor of choice.
sudo vim ~/.homestead/Homestead.yaml
Add the folders to map. If using vim as the editor you must press "i" to insert text
- map: "/Applications/MAMP/htdocs/vagrant/temprano/cohesion-app/webservice"