我已安装gem activeUUID但是当尝试运行de application时出现下一个错误，我已经运行了bundle install
/Users/evelinponce/.rvm/gems/ruby-2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'activeuuid'. (Bundler::GemRequireError)
from /Users/evelinponce/.rvm/gems/ruby-2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from /Users/evelinponce/.rvm/gems/ruby-2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `each'
from /Users/evelinponce/.rvm/gems/ruby-2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `block in require'
from /Users/evelinponce/.rvm/gems/ruby-2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `each'
from /Users/evelinponce/.rvm/gems/ruby-2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `require'
from /Users/evelinponce/.rvm/gems/ruby-2.2.4/gems/bundler-1.11.2/lib/bundler.rb:99:in `require'
的Gemfile
source 'https://rubygems.org'
ruby ENV['CUSTOM_RUBY_VERSION'] || '2.2.4'
gem 'rails', '4.2.5'
gem 'mysql2'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
gem 'rake', '~> 10.4.2'
gem 'jquery-rails'
gem 'turbolinks', '2.5.3'
gem 'devise'
gem 'simple_form'
gem 'virtus'
gem 'bootstrap-sass'
# track events
gem 'ahoy_matey'
gem 'activeuuid'
我的环境
ruby 2.2.4p230 (2015-12-16 revision 53155) [x86_64-darwin14]