NFS is involved with the directories Vagrant syncs from your primary machine into the VM. The “exports” you’ve deleted will need to be replaced/renewed in order for the sync dirs to work, e.g., in order for the VM to have the
/home/vagrant/trellis/ dir (a synced dir).
You can refresh the sync dirs by reloading the VM:
Given that you are working to get your first successful VM, you may have some provisioning steps that still need to complete. So, add the
vagrant reload --provision