未定義的方法`少時，分貝：遷移

Question

當我嘗試分貝：遷移我的應用程序，我得到這個錯誤：

rake aborted! 
undefined method `less' for #<Rails::Application::Configuration:0x007fdca55c75e0> 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/railtie/configuration.rb:95:in `method_missing' 
/app/vendor/bundle/ruby/2.1.0/bundler/gems/twitter-bootstrap-rails-965ebd304f74/lib/twitter/bootstrap/rails/engine.rb:17:in `block in <class:Engine>' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/initializable.rb:30:in `instance_exec' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/initializable.rb:30:in `run' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/initializable.rb:55:in `block in run_initializers' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/initializable.rb:54:in `run_initializers' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/application.rb:215:in `initialize!' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/railtie/configurable.rb:30:in `method_missing' 
/app/config/environment.rb:6:in `<top (required)>' 
/app/vendor/bundle/ruby/2.1.0/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:229:in `require' 
/app/vendor/bundle/ruby/2.1.0/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:229:in `block in require' 
/app/vendor/bundle/ruby/2.1.0/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:214:in `load_dependency' 
/app/vendor/bundle/ruby/2.1.0/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:229:in `require' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/application.rb:189:in `require_environment!' 
/app/vendor/bundle/ruby/2.1.0/gems/railties-4.0.3/lib/rails/application.rb:250:in `block in run_tasks_blocks' 
Tasks: TOP => db:migrate => environment 

出了什麼問題？我已經有gem 'less', '2.4.0'中的Gemfile

Answer 1

添加therubyracer寶石和不太軌寶石

gem "therubyracer" 
gem "less-rails" 
gem "twitter-bootstrap-rails" 

請在寶石檢查鏈接問題：https://github.com/seyhunak/twitter-bootstrap-rails/issues/437