I had some previous images/boxes installed in my VirtualBox installation, so there were a few invalid entries in /etc/exports
already. So I had to clean up that file and restart my Vagrant box.
NFS is reporting that your exports file is invalid. Vagrant does
this check before making any changes to the file. Please correct
the issues below and execute "vagrant reload":
Here’s what I did on my host machine:
sudo rm /etc/exports
sudo touch /etc/exports
vagrant halt
vagrant up --provision