I\'m using Vagrant for my environment and I\'ve got a little issue:
$vagrant up
Bringing machine \'default\' up with \'virtualbox\' provider...
==> defau
When you do vagrant init , it replaces the vagrant file in your repo and can give you that error. So I would suggest you copy the original vagrant file from remote or a backup vagrant file and try vagrant up after that.
I came across same issue and I just copied the vagrant file from my remote repo and replaced the vagrant file I was trying to run. This synced the configurations in the vagrant file with the VM.