laravel - homestead vagrant up suddenly gives error -


i error while trying boot homestead server vagrant up. saw identical issue here answer wasn't descriptive me follow.

c:/users/ekwonwa henry/homestead/scripts/homestead.rb:168:in `+': no implicit conversion of nil string (typeerror)         c:/users/ekwonwa henry/homestead/scripts/homestead.rb:168:in `block (2 levels) in configure'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/plugins/kernel_v2/config/vm_provisioner.rb:72:in `call'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/plugins/kernel_v2/config/vm_provisioner.rb:72:in `add_config'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/plugins/kernel_v2/config/vm.rb:324:in `provision'         c:/users/ekwonwa henry/homestead/scripts/homestead.rb:167:in `block in configure'         c:/users/ekwonwa henry/homestead/scripts/homestead.rb:156:in `each'         c:/users/ekwonwa henry/homestead/scripts/homestead.rb:156:in `configure'         c:/users/ekwonwa henry/homestead/vagrantfile:30:in `block in <top (required)>'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/config/v2/loader.rb:37:in `call'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/config/v2/loader.rb:37:in `load'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/config/loader.rb:113:in `block (2 levels) in load'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/config/loader.rb:107:in `each'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/config/loader.rb:107:in `block in load'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/config/loader.rb:104:in `each'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/config/loader.rb:104:in `load'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/vagrantfile.rb:28:in `initialize'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/environment.rb:740:in `new'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/environment.rb:740:in `vagrantfile'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/environment.rb:486:in `host'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/environment.rb:208:in `block in action_runner'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/action/runner.rb:33:in `call'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/action/runner.rb:33:in `run'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/environment.rb:473:in `hook'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/lib/vagrant/environment.rb:722:in `unload'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/bin/vagrant:177:in `ensure in <main>'         c:/hashicorp/vagrant/embedded/gems/gems/vagrant-1.8.5/bin/vagrant:177:in `<main>'


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