ruby-on-rails – 无法修改冻结数组(TypeError) – config / application.rb：42：in << <<'：

我有一个rails 3应用程序,我正在尝试进行测试.我执行以下命令rspec spec / controllers /并得到以下错误：

/config/application.rb:42:in `<<': can't modify frozen array (TypeError)
        from c:/Users/#####/documents/#####/config/application.rb:42

它指向我在下面提供的config / application.rb文件.

require File.expand_path('../boot',__FILE__)

require 'rails/all'

# If you have a Gemfile,require the gems listed there,including any gems
# you've limited to :test,:development,or :production.
Bundler.require(:default,Rails.env) if Defined?(Bundler)

module PadOnRails
  class Application < Rails::Application
    # SetTings in config/environments/* take precedence over those specified here.
    # Application configuration should go into files in config/initializers
    # -- all .rb files in that directory are automatically loaded.

    # Custom directories with classes and modules you want to be autoloadable.
    # config.autoload_paths += %W(#{Config.root}/extras)

    # Only load the plugins named here,in the order given (default is alphabetical).
    # :all can be used as a placeholder for all plugins not explicitly named.
    # config.plugins = [ :exception_notification,:ssl_requirement,:all ]

    # Activate observers that should always be running.
    # config.active_record.observers = :cacher,:garbage_collector,:forum_observer

    # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
    # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
    # config.time_zone = 'Central Time (US & Canada)'

    # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
    # config.i18n.load_path += Dir[Rails.root.join('my','locales','*.{rb,yml}').to_s]
    # config.i18n.default_locale = :de

    # JavaScript files you want as :defaults (application.js is always included).
    # config.action_view.javascript_expansions[:defaults] = %w(jquery rails)

    # Configure the default encoding used in templates for Ruby 1.9.
    config.encoding = "utf-8"

    # Configure sensitive parameters which will be filtered from the log file.
    config.filter_parameters += [:password]

    config.autoload_paths << "#{Config.root}/lib"


  end
end

有其他人经历过这种确切的问题.如果是这样你怎么解决它,因为我已经删除了我的项目并完成了一个git克隆仍然得到相同的错误.

config.autoload_paths += %W{#{Config.root}/lib}