我刚刚升级了我的应用程序以使用 Ruby 2.4.0，在捆绑过程中没有任何错误。但是，当我尝试启动服务器时，出现以下错误：
There was an error while trying to load the gem 'uglifier'. (Bundler::GemRequireError)
Gem Load Error is: wrong argument type Class (expected Module)
我在此站点的其他答案中发现您需要将gem 'therubyracer'添加到您的 Gemfile 中，但自从创建我的应用程序以来，我已经有了。
最新版本的 NodeJS 也安装在我的机器上。
有没有人遇到过此错误并知道如何解决它？
Gemfile 中的丑陋配置：gem 'uglifier', '~> 3.0.4'
全栈跟踪：
/home/severin/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:51: warning: constant ::Fixnum is deprecated
/home/severin/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:52: warning: constant ::Bignum is deprecated
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:21: warning: constant ::Fixnum is deprecated
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:94: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: wrong argument type Class (expected Module)
Backtrace for gem load error is:
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:23:in `include'
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:23:in `block (2 levels) in <top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:22:in `class_eval'
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:22:in `block in <top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:21:in `each'
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8/conversion.rb:21:in `<top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8.rb:22:in `require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/therubyracer-0.12.2/lib/v8.rb:22:in `<top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs/ruby_racer_runtime.rb:108:in `require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs/ruby_racer_runtime.rb:108:in `available?'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:63:in `each'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:63:in `find'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:63:in `best_available'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:57:in `autodetect'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/uglifier-3.0.4/lib/uglifier.rb:5:in `require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/uglifier-3.0.4/lib/uglifier.rb:5:in `<top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:91:in `require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:91:in `block (2 levels) in require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `each'
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `block in require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `each'
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler.rb:106:in `require'
/home/config/application.rb:7:in `<top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:88:in `require'
/home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:88:in `block in server'
/home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `tap'
/home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `server'
/home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
/home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>'
/home/bin/rails:9:in `require'
/home/bin/rails:9:in `<top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client/rails.rb:28:in `load'
/home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client/rails.rb:28:in `call'
/home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client/command.rb:7:in `call'
/home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client.rb:30:in `run'
/home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/bin/spring:49:in `<top (required)>'
/home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/binstub.rb:31:in `load'
/home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/binstub.rb:31:in `<top (required)>'
/home/severin/bin/spring:13:in `require'
/home/severin/bin/spring:13:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
Bundler Error Backtrace:
from /home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:90:in `block (2 levels) in require'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `each'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:86:in `block in require'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `each'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/runtime.rb:75:in `require'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler.rb:106:in `require'
from /home/severin/config/application.rb:7:in `<top (required)>'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:88:in `require'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:88:in `block in server'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `tap'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `server'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>'
from /home/severin/bin/rails:9:in `require'
from /home/severin/bin/rails:9:in `<top (required)>'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client/rails.rb:28:in `load'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client/rails.rb:28:in `call'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client/command.rb:7:in `call'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/client.rb:30:in `run'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/bin/spring:49:in `<top (required)>'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/binstub.rb:31:in `load'
from /home/severin/.rvm/gems/ruby-2.4.0/gems/spring-2.0.0/lib/spring/binstub.rb:31:in `<top (required)>'
from /home/severin/bin/spring:13:in `require'
from /home/severin/bin/spring:13:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
这是
uglifier存储库上的一个未解决的问题：Uglifier不会使用Ruby Racer JS运行时加载Ruby 2.4.0。
这是由于在Ruby 2.4.0中将Fixnum和Bignum统一为Integer。这是解决问题的拉取请求，它实际上在于 therubyracer ，而不是uglifier .
现在，作为临时修复，您可以将Gemfile配置为使用存储库的主分支：
gem 'therubyracer', git: 'https://github.com/cowboyd/therubyracer.git'
更新：therubyracer版本0.12.3现已发布，其中包括上述对 ruby 2.4 支持的修复。