uninitialized constant Homebrew::Service

[lms-sam]

➜ xxx brew services list Error: uninitialized constant Homebrew::Service /usr/local/Homebrew/Library/Homebrew/formula.rb:1267:in `service' /usr/local/Homebrew/Library/Homebrew/formula.rb:1238:in `plist_name' /usr/local/Homebrew/Library/Homebrew/formula.rb:1250:in `launchd_service_path' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/lib/service/formula_wrapper.rb:58:in `service_file' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/lib/service/formula_wrapper.rb:92:in `plist?' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/lib/service/formulae.rb:14:in `block in available_services' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/lib/service/formulae.rb:14:in `select' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/lib/service/formulae.rb:14:in `available_services' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/lib/service/formulae.rb:25:in `services_list' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/lib/service/commands/list.rb:13:in `run' /usr/local/Homebrew/Library/Taps/homebrew/homebrew-services/cmd/services.rb:129:in `services' /usr/local/Homebrew/Library/Homebrew/brew.rb:96:in `public_send' /usr/local/Homebrew/Library/Homebrew/brew.rb:96:in `' If reporting this issue please do so at (not Homebrew/brew or Homebrew/homebrew-core):

[SMillerDev]

What do brew config and brew doctor say?

[2015WUJI01]

check this out: Homebrew/homebrew-core#177327 (comment)