Ruby on rails 3 未初始化常量Thin:：HttpParser（NameError）
这是我从1.2.7版升级到1.2.8版后遇到的错误。当我卸载新版本并告诉我的包再次使用1.2.7时，一切都很好Ruby on rails 3 未初始化常量Thin:：HttpParser（NameError）,ruby-on-rails-3,thin,Ruby On Rails 3,Thin,这是我从1.2.7版升级到1.2.8版后遇到的错误。当我卸载新版本并告诉我的包再次使用1.2.7时，一切都很好 /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/request.rb:52:in `initialize': uninitialized constant Thin::HttpParser (NameError) from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/connection
/usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/request.rb:52:in `initialize': uninitialized constant Thin::HttpParser (NameError)
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/connection.rb:35:in `new'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/connection.rb:35:in `post_init'
from /usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/em/connection.rb:45:in `new'
from /usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/em/connection.rb:36:in `instance_eval'
from /usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/em/connection.rb:36:in `new'
from /usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:1430:in `event_callback'
from /usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine'
from /usr/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/backends/base.rb:61:in `start'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/server.rb:159:in `start'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/controllers/controller.rb:86:in `start'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/runner.rb:185:in `send'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/runner.rb:185:in `run_command'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/lib/thin/runner.rb:151:in `run!'
from /usr/lib/ruby/gems/1.8/gems/thin-1.2.8/bin/thin:6
from /usr/bin/thin:19:in `load'
from /usr/bin/thin:19