运行rails server 出现There was an error while trying to load the gem ‘uglifier’. (Bundler::GemRequireErr

现象：在linux下运行rails server 出现There was an error while trying to load the gem ‘uglifier’. (Bundler::GemRequireError) 原因是缺少依赖的组件nodejs

运行sudo apt-get install nodejs 安装nodejs，再重新运行rails server即可。