CentOS 7 - Gem Load Error is: Could not find a JavaScript runtime.

Gem Load Error is: Could not find a JavaScript runtime.

エラーメッセージ


# bundle exec rails s
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:85:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'uglifier'. (Bundler::GemRequireError)
Gem Load Error is: Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes.
Backtrace for gem load error is:
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:58:in `autodetect'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<top (required)>'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/uglifier-3.2.0/lib/uglifier.rb:5:in `require'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/uglifier-3.2.0/lib/uglifier.rb:5:in `<top (required)>'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:82:in `require'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:82:in `block (2 levels) in require'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:77:in `each'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:77:in `block in require'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:66:in `each'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:66:in `require'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler.rb:108:in `require'
/root/projects/e-shop/config/application.rb:7:in `<top (required)>'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:133:in `require'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:133:in `block in perform'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:130:in `tap'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:130:in `perform'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/command/base.rb:63:in `perform'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/command.rb:44:in `invoke'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands.rb:16:in `<top (required)>'
/root/projects/e-shop/bin/rails:9:in `require'
/root/projects/e-shop/bin/rails:9:in `<top (required)>'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
/root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
/root/projects/e-shop/bin/spring:15:in `require'
/root/projects/e-shop/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
Bundler Error Backtrace:
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:77:in `each'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:77:in `block in require'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:66:in `each'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/runtime.rb:66:in `require'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler.rb:108:in `require'
        from /root/projects/e-shop/config/application.rb:7:in `<top (required)>'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:133:in `require'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:133:in `block in perform'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:130:in `tap'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands/server/server_command.rb:130:in `perform'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/command/base.rb:63:in `perform'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/command.rb:44:in `invoke'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/railties-5.1.4/lib/rails/commands.rb:16:in `<top (required)>'
        from /root/projects/e-shop/bin/rails:9:in `require'
        from /root/projects/e-shop/bin/rails:9:in `<top (required)>'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
        from /root/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
        from /root/projects/e-shop/bin/spring:15:in `require'
        from /root/projects/e-shop/bin/spring:15:in `<top (required)>'
        from bin/rails:3:in `load'
        from bin/rails:3:in `<main>'

解決策


# yum install -y epel-release && yum update && yum install --enablerepo=epel nodejs