bootstrap：要导入的文件未找到或不可读

我已经找到了一些关于我的问题的主题，但我不明白应该如何修复它。

我正在关注http://ruby.railstutorial.org/chapters/filling-in-the-layout#fnref-5_5教程，并在app / assets / stylesheets / custom.css.scss中导入引导程序。

那是我的Gemfile：

source 'https://rubygems.org' gem 'bootstrap-sass', '2.0.4' gem 'rails', '3.2.8' group :development, :test do gem 'sqlite3', '1.3.5' gem 'rspec-rails', '2.11.0' end Gems used only for assets and not required in production environments by default. group :assets do gem 'sass-rails', '3.2.5' gem 'coffee-rails', '3.2.2' gem 'uglifier', '1.2.3' end gem 'jquery-rails', '2.0.2' group :test do gem 'capybara', '1.1.2' end group :production do gem 'pg', '0.12.2' end 

我在localhost / sample_app / home上遇到了什么错误

 Sass::SyntaxError in Static_pages#home Showing c:/Users/katja/Arbeit/rails_projects/sample_app/app/views/layouts/application.html.erb where line #5 raised: File to import not found or unreadable: bootstrap. Load path: Sass::Rails::Importer(c:/Users/katja/Arbeit/rails_projects/sample_app/app/assets/stylesheets/custom.css.scss) (in c:/Users/katja/Arbeit/rails_projects/sample_app/app/assets/stylesheets/custom.css.scss) Extracted source (around line #5): 2: 3: 4:  5:  6:  7:  8: 



	







 
	
Answer 1
		      	
 重新启动Web服务器“rails s”。 


Answer 2
		      	
 我不得不重新启动服务器ps aux |  grep rails kill -9 12345 
 其中12345是进程号 
  （不确定是否有其他方法可以重启rails？ 


Answer 3
		      	
  source 'https://rubygems.org' gem 'rails', '3.2.8' group :development, :test do gem 'sqlite3', '1.3.5' gem 'rspec-rails', '2.11.0' end Gems used only for assets and not required in production environments by default. group :assets do gem 'sass-rails', '3.2.5' gem 'bootstrap-sass', '2.0.4' gem 'coffee-rails', '3.2.2' gem 'uglifier', '1.2.3' end gem 'jquery-rails', '2.0.2' group :test do gem 'capybara', '1.1.2' end group :production do gem 'pg', '0.12.2' end 
 将bootstrap-sass gem添加到资产块中