/Users/shaddeler/Developer/run/Homestead/scripts/homestead.rb:169:in `+': no implicit conversion of nil into String (TypeError)
from /Users/shaddeler/Developer/run/Homestead/scripts/homestead.rb:169:in `block (2 levels) in configure'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/plugins/kernel_v2/config/vm_provisioner.rb:72:in `call'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/plugins/kernel_v2/config/vm_provisioner.rb:72:in `add_config'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/plugins/kernel_v2/config/vm.rb:324:in `provision'
from /Users/shaddeler/Developer/run/Homestead/scripts/homestead.rb:168:in `block in configure'
from /Users/shaddeler/Developer/run/Homestead/scripts/homestead.rb:157:in `each'
from /Users/shaddeler/Developer/run/Homestead/scripts/homestead.rb:157:in `configure'
from /Users/shaddeler/Developer/run/Homestead/Vagrantfile:30:in `block in <top (required)>'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/config/v2/loader.rb:37:in `call'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/config/v2/loader.rb:37:in `load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/config/loader.rb:113:in `block (2 levels) in load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/config/loader.rb:107:in `each'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/config/loader.rb:107:in `block in load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/config/loader.rb:104:in `each'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/config/loader.rb:104:in `load'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/vagrantfile.rb:28:in `initialize'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/environment.rb:746:in `new'
from /opt/vagrant/embedded/gems/gems/vagrant-1.8.6/lib/vagrant/environment.rb:746:in `vagrantfile'
from …
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