我正在使用 Rails 4.0.1、Ruby 2.0 和运行 Windows。我在我的一个控制器文件中尝试了 'require'-ing 'twitter'：
require 'rubygems'
require 'twitter'
class MyController < ApplicationController
#etc
我在我的 Gemfile 中添加了“twitter”：
gem 'twitter'
然后重新启动我的 Rails 服务器。但是，当我跑步时，rails s我得到了：
c:/Ruby200/lib/ruby/gems/2.0.0/gems/http_parser.rb-0.5.3-x86-mingw32/lib/ruby_http_parser.rb:2:in `require': cannot load such file -- 2.0/ruby_http_parser (LoadError)
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/http_parser.rb-0.5.3-x86-mingw32/lib/ruby_http_parser.rb:2:in `<top (required)>'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/http_parser.rb-0.5.3-x86-mingw32/lib/http_parser.rb:2:in `require'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/http_parser.rb-0.5.3-x86-mingw32/lib/http_parser.rb:2:in `<top (required)>'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/http_parser.rb-0.5.3-x86-mingw32/lib/http/parser.rb:1:in `require'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/http_parser.rb-0.5.3-x86-mingw32/lib/http/parser.rb:1:in `<top (require d)>'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/twitter-5.1.1/lib/twitter/streaming/connection.rb:1:in `require'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/twitter-5.1.1/lib/twitter/streaming/connection.rb:1:in `<top (required)>'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/twitter-5.1.1/lib/twitter/streaming/client.rb:4:in `require'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/twitter-5.1.1/lib/twitter/streaming/client.rb:4:in `<top (required)>'
from c:/Ruby200/lib/ruby/gems/2.0.0/gems/twitter-5.1.1/lib/twitter.rb:26:in `require'
#etc
我已尝试研究此错误，但没有发现任何此类错误的常见原因是忘记在 Gemfile 中包含 twitter 或忘记需要 rubygems。对新手 Rails 开发人员有任何帮助吗？谢谢！