アプリはすくい宝石未定義のメソッドが `nilには「マップ:NilClass
感謝をインストールするに次のエラーを取得して、レール2.2.2 を使用しています!
D:\web>rake gems:install --trace
(in D:/web)
rake aborted!
undefined method `map' for nil:NilClass
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems.rb:223:in `activate'
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:35:in `require'
D:/web/vendor/rails/activesupport/lib/active_support.rb:56
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
D:/web/vendor/rails/railties/lib/tasks/misc.rake:18
D:/web/vendor/rails/railties/lib/tasks/rails.rb:4:in `load'
D:/web/vendor/rails/railties/lib/tasks/rails.rb:4
D:/web/vendor/rails/railties/lib/tasks/rails.rb:4:in `each'
D:/web/vendor/rails/railties/lib/tasks/rails.rb:4
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
D:/web/Rakefile:10
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `load'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `raw_load_rakefile'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2017:in `load_rakefile'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2016:in `load_rakefile'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2000:in `run'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31
C:/Ruby/bin/rake:19:in `load'
C:/Ruby/bin/rake:19
D:\web>
質問を再フォーマットして、スタックトレース全体をコードとしてフォーマットすることができます(選択して「101010」ボタンを押してください)。ありがとう – iain