由于'uglifier'，无法启动Ruby on Rails Web应用程序

尝试加载gem'uglifier'时发生错误。由于'uglifier'，无法启动Ruby on Rails Web应用程序

Gem Load Error is: wrong argument type Class (expected Module) 
Backtrace for gem load error is: 

/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:23:in `include' 
/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:23:in `block (2 levels) in <top (required)>' 
/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:22:in `class_eval' 
/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:22:in `block in <top (required)>' 
/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:21:in `each' 
/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:21:in `<top (required)>' 
/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8.rb:22:in `require' 
/usr/local/lib/ruby/gems/2.4.0/gems/therubyracer-0.12.2/lib/v8.rb:22:in `<top (required)>' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs/ruby_racer_runtime.rb:108:in `require' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs/ruby_racer_runtime.rb:108:in `available?' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:63:in `each' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:63:in `find' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:63:in `best_available' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:57:in `autodetect' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>' 
/usr/local/lib/ruby/gems/2.4.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<top (required)>' 
/usr/local/lib/ruby/gems/2.4.0/gems/uglifier-3.0.4/lib/uglifier.rb:5:in `require' 
/usr/local/lib/ruby/gems/2.4.0/gems/uglifier-3.0.4/lib/uglifier.rb:5:in `<top (required)>' 
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:91:in `require' 
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:91:in `block (2 levels) in require' 
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `each' 
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `block in require' 
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `each' 
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `require' 
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler.rb:106:in `require' 
/var/www/geia.junyuzhu.com/public_html/testapp/config/application.rb:7:in `<top (required)>' 
/var/www/geia.junyuzhu.com/public_html/testapp/config/environment.rb:2:in `require_relative' 
/var/www/geia.junyuzhu.com/public_html/testapp/config/environment.rb:2:in `<top (required)>' 
config.ru:3:in `require_relative' 
config.ru:3:in `block in <main>' 
/usr/local/lib/ruby/gems/2.4.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `instance_eval' 
/usr/local/lib/ruby/gems/2.4.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `initialize' 
config.ru:1:in `new' 
config.ru:1:in `<main>' 
/usr/share/passenger/helper-scripts/rack-preloader.rb:110:in `eval' 
/usr/share/passenger/helper-scripts/rack-preloader.rb:110:in `preload_app' 
/usr/share/passenger/helper-scripts/rack-preloader.rb:156:in `<module:App>' 
/usr/share/passenger/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>' 
/usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `<main>' 
Bundler Error Backtrace: 
(Bundler::GemRequireError) 
    /usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:94:in `rescue in block (2 levels) in require' 
    /usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:90:in `block (2 levels) in require' 
    /usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `each' 
    /usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `block in require' 
    /usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `each' 
    /usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `require' 
    /usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.13.7/lib/bundler.rb:106:in `require' 
    /var/www/geia.junyuzhu.com/public_html/testapp/config/application.rb:7:in `<top (required)>' 
    /var/www/geia.junyuzhu.com/public_html/testapp/config/environment.rb:2:in `require_relative' 
    /var/www/geia.junyuzhu.com/public_html/testapp/config/environment.rb:2:in `<top (required)>' 
    config.ru:3:in `require_relative' 
    config.ru:3:in `block in <main>' 
    /usr/local/lib/ruby/gems/2.4.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `instance_eval' 
    /usr/local/lib/ruby/gems/2.4.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `initialize' 
    config.ru:1:in `new' 
    config.ru:1:in `<main>' 
    /usr/share/passenger/helper-scripts/rack-preloader.rb:110:in `eval' 
    /usr/share/passenger/helper-scripts/rack-preloader.rb:110:in `preload_app' 
    /usr/share/passenger/helper-scripts/rack-preloader.rb:156:in `<module:App>' 
    /usr/share/passenger/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>' 
    /usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `<main>'

我试过安装nodejs并重新启动apache服务器。这对这个问题没有帮助。

bundle show uglifier给

/usr/local/lib/ruby/gems/2.4.0/gems/uglifier-3.0.4

我以为我已经uglifier正确安装。

另外gem 'therubyracer', platforms: :ruby在Gemfile中没有注释。

请帮忙，我不知道如何解决这个问题。

来源

2017-01-02 Junyu

这是a known issue与therubyracer和红宝石2.4。在Ruby 2.4兼容性方面还有一些额外的问题，它们在问题跟踪器https://github.com/cowboyd/therubyracer/issues/430中跟踪。

您应该使用早期版本的Ruby，例如2.3.3直到发布新版本的therubyracer。

顺便说一句：有几个gem与Ruby 2.4不兼容。为了避免在新版本发布后遇到大量兼容性问题，在发布的第一天不进行升级可能是明智之举

来源

2017-01-02 12:02:05

非常感谢。它解决了我的问题。 – Junyu

在默认导轨Gemfile中，gem therubyracer的行被注释掉。如果你取消注释，你会得到那个宝石，它应该工作。（解决了我的问题）继赞扬

运行

sudo apt-get install nodejs

Uglifier是JS的包装，它需要一个JS运行时中运行或JS解释

来源

2017-01-02 11:57:34

由于'uglifier'，无法启动Ruby on Rails Web应用程序

回答

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