当我尝试加载 rails 服务器时，出现此错误：
/home/jared/.rvm/gems/ruby-head/gems/bundler-1.11.2/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'uglifier'. (Bundler::GemRequireError)
from /home/jared/.rvm/gems/ruby-head/gems/bundler-1.11.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from /home/jared/.rvm/gems/ruby-head/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `each'
from /home/jared/.rvm/gems/ruby-head/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `block in require'
from /home/jared/.rvm/gems/ruby-head/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `each'
from /home/jared/.rvm/gems/ruby-head/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `require'
from /home/jared/.rvm/gems/ruby-head/gems/bundler-1.11.2/lib/bundler.rb:99:in `require'
from /home/jared/thirteenthagecharbuilder/config/application.rb:7:in `<top (required)>'
from /home/jared/.rvm/gems/ruby-head/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:78:in `require'
from /home/jared/.rvm/gems/ruby-head/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:78:in `block in server'
from /home/jared/.rvm/gems/ruby-head/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /home/jared/.rvm/gems/ruby-head/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:75:in `server'
from /home/jared/.rvm/gems/ruby-head/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /home/jared/.rvm/gems/ruby-head/gems/railties-4.2.5.1/lib/rails/commands.rb:17:in `<top (required)>'
from /home/jared/thirteenthagecharbuilder/bin/rails:9:in `require'
from /home/jared/thirteenthagecharbuilder/bin/rails:9:in `<top (required)>'
from /home/jared/.rvm/gems/ruby-head/gems/spring-1.6.2/lib/spring/client/rails.rb:28:in `load'
from /home/jared/.rvm/gems/ruby-head/gems/spring-1.6.2/lib/spring/client/rails.rb:28:in `call'
from /home/jared/.rvm/gems/ruby-head/gems/spring-1.6.2/lib/spring/client/command.rb:7:in `call'
from /home/jared/.rvm/gems/ruby-head/gems/spring-1.6.2/lib/spring/client.rb:28:in `run'
from /home/jared/.rvm/gems/ruby-head/gems/spring-1.6.2/bin/spring:49:in `<top (required)>'
from /home/jared/.rvm/gems/ruby-head/gems/spring-1.6.2/lib/spring/binstub.rb:11:in `load'
from /home/jared/.rvm/gems/ruby-head/gems/spring-1.6.2/lib/spring/binstub.rb:11:in `<top (required)>'
from /home/jared/thirteenthagecharbuilder/bin/spring:13:in `require'
from /home/jared/thirteenthagecharbuilder/bin/spring:13:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
我已经搜索了很多这个问题，并且我在stackoverflow上发现的每个答案都说“安装nodejs”，我已经这样做了，但这并没有为我解决任何问题。
jared@machine:~$ nodejs -v
v0.10.29
jared@machine:~$ node -v
v4.4.4
jared@machine:~$ npm --version
2.15.1
jared@machine:~$ echo $PATH
/home/jared/.rvm/gems/ruby-head/bin:/home/jared/.rvm/gems/ruby-head@global/bin:/home/jared/.rvm/rubies/ruby-head/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/jared/.rvm/bin:/home/jared/.rvm/bin:/home/jared/.rvm/bin:/usr/local/nodejs/bin
我还在我的 gemfile 中添加了 therubyracer gem。我捆绑安装。在我的绳索结束时，因为，老实说，我从任何人那里看到的关于这个问题的唯一建议是安装 nodejs，并且通常基于此线程被标记为已解决，我无法尝试进一步的事情。
在 debian 8 (jessie) 64 位上运行 rails 4.2.5.1，使用 rvm，安装 ruby 2.4.0。
编辑：由于似乎没有人想解决这个问题，这里有一些来自我知道也无法解决问题的 rails 开发人员的更多信息：
添加
$stderr.puts e.inspect
在第 80 行的正上方产生：
#<TypeError: wrong argument type Class (expected Module)>
并搜索 uglifier 以查看一个类是否在项目中不应该被引用的某个地方被引用，结果是：
jared@machine:~/thirteenthagecharbuilder$ grep -r uglifier /home/jared/thirteenthagecharbuilder/
/home/jared/thirteenthagecharbuilder/Gemfile.lock: uglifier (3.0.0)
/home/jared/thirteenthagecharbuilder/Gemfile.lock: uglifier (>= 2.7.1)
/home/jared/thirteenthagecharbuilder/Gemfile:gem 'uglifier', '>= 2.7.1'
/home/jared/thirteenthagecharbuilder/config/environments/production.rb: config.assets.js_compressor = :uglifier
最后（现在），config/application.rb 的第 7 行说
Bundler.require(*Rails.groups)