正如标题所述，我在虚拟机上克隆了我的一个项目，但似乎无法使用“ rails s”启动RoR Web服务器。起初，我以为自己有一个有趣的宝石，所以我将其阻止在Gemfile中。但是，当我这样做时，另一个宝石无法正常工作。我目前不知所措，所以我希望有人可以帮助我。谢谢您的阅读，祝您有美好的一天！
Traceback (most recent call last):
31: from bin/rails:3:in `<main>'
30: from bin/rails:3:in `load'
29: from /home/ncs/Karaz-Ankor/bin/spring:15:in `<top (required)>'
28: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
27: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
26: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
25: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
24: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
23: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
22: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
21: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
20: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
19: from /home/ncs/Karaz-Ankor/bin/rails:9:in `<top (required)>'
18: from /home/ncs/Karaz-Ankor/bin/rails:9:in `require'
17: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands.rb:16:in `<top (required)>'
16: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/command.rb:44:in `invoke'
15: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/command/base.rb:63:in `perform'
14: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
13: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
12: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
11: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:130:in `perform'
10: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:130:in `tap'
9: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:133:in `block in perform'
8: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:133:in `require'
7: from /home/ncs/Karaz-Ankor/config/application.rb:7:in `<top (required)>'
6: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler.rb:114:in `require'
5: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:65:in `require'
4: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:65:in `each'
3: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:76:in `block in require'
2: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:76:in `each'
1: from /home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:80:in `block (2 levels) in require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:84: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:
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:58:in `autodetect'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<top (required)>'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.1.5/lib/active_support/dependencies.rb:292:in `require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.1.5/lib/active_support/dependencies.rb:292:in `block in require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.1.5/lib/active_support/dependencies.rb:258:in `load_dependency'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.1.5/lib/active_support/dependencies.rb:292:in `require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/uglifier-4.1.19/lib/uglifier.rb:5:in `<top (required)>'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:81:in `require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:76:in `each'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:76:in `block in require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:65:in `each'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler/runtime.rb:65:in `require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.4/lib/bundler.rb:114:in `require'
/home/ncs/Karaz-Ankor/config/application.rb:7:in `<top (required)>'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:133:in `require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:133:in `block in perform'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:130:in `tap'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands/server/server_command.rb:130:in `perform'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/command/base.rb:63:in `perform'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/command.rb:44:in `invoke'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.1.5/lib/rails/commands.rb:16:in `<top (required)>'
/home/ncs/Karaz-Ankor/bin/rails:9:in `require'
/home/ncs/Karaz-Ankor/bin/rails:9:in `<top (required)>'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in require'
/home/ncs/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in require'
/ home / ncs / Karaz-Ankor / bin / spring：15：in <top (required)>'
bin/rails:3:in load'
bin / rails：3：in`'
捆绑器错误回溯：
答案 0 :(得分：0)
您没有安装Javascript运行时。
如果您使用的是Ubuntu或其衍生版本，则可以通过运行安装NodeJS运行时。
sudo apt-get install nodejs
如果您使用的是Debain
sudo aptitude install nodejs
要在使用yum的系统上安装nodejs，请在终端中键入以下内容：
yum -y install nodejs
答案 1 :(得分：0)
根据发布的说明，它表明我无法安装宝石'uglifier'。
Uglifier是JS包装器，它需要运行JS运行时或JS解释器。
Nodejs不是必需的，但是JS运行时或解释器是必需的。
这是NodeJS的角色。
如果不是NodeJS，则需要另一个JS运行时/解释器。
您应该运行以下命令在Ubuntu中安装NodeJS
sudo apt-get install nodejs
或在OSX上运行
brew install nodejs