vagrant up

C:/HashiCorp/Vagrant/embedded/mingw64/lib/ruby/2.4.0/psych.rb:377:in `parse': (<unknown>): did not find expected key while parsing a block mapping at line 2 column 1 (Psych::SyntaxError)
        from C:/HashiCorp/Vagrant/embedded/mingw64/lib/ruby/2.4.0/psych.rb:377:in `parse_stream'
        from C:/HashiCorp/Vagrant/embedded/mingw64/lib/ruby/2.4.0/psych.rb:325:in `parse'
        from C:/HashiCorp/Vagrant/embedded/mingw64/lib/ruby/2.4.0/psych.rb:252:in `load'
        from C:/Users/Charles Wettlaufer/Homestead/Vagrantfile:28:in `block in <top (required)>'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/config/v2/loader.rb:37:in `load'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/config/loader.rb:126:in `block (2 levels) in load'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/config/loader.rb:119:in `each'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/config/loader.rb:119:in `block in load'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/config/loader.rb:116:in `each'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/config/loader.rb:116:in `load'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/vagrantfile.rb:28:in `initialize'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/environment.rb:777:in `new'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/environment.rb:777:in `vagrantfile'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/environment.rb:523:in `host'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/environment.rb:191:in `block in action_runner'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/action/runner.rb:33:in `run'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/environment.rb:510:in `hook'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/lib/vagrant/environment.rb:759:in `unload'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/bin/vagrant:164:in `ensure in <main>'
        from C:/HashiCorp/Vagrant/embedded/gems/2.1.2/gems/vagrant-2.1.2/bin/vagrant:164:in `<main>'