我已经创建了一个应用程序，但是当我启动rails服务器时，我得到以下输出。有人能告诉我我哪里做错了吗?我要把头发拔出来了!
=> Booting WEBrick
=> Rails 3.1.3 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require': no such file to load -- openssl (LoadError)
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/rack-1.3.5/lib/rack/session/cookie.rb:1
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/actionpack-3.1.3/lib/action_dispatch/middleware/session/cookie_store.rb:4
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/application/configuration.rb:131:in `const_get'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/application/configuration.rb:131:in `session_store'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/application.rb:172:in `default_middleware_stack'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/application.rb:146:in `tap'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/application.rb:146:in `default_middleware_stack'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/engine.rb:446:in `build_middleware_stack'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/application/finisher.rb:37
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/initializable.rb:30:in `instance_exec'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/initializable.rb:30:in `run'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/initializable.rb:55:in `run_initializers'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/initializable.rb:54:in `each'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/initializable.rb:54:in `run_initializers'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/application.rb:96:in `initialize!'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/railtie/configurable.rb:30:in `send'
from /usr/local/lib/ruby/gems/1.8/gems/railties-3.1.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /home/khussain/delete/config/environment.rb:5
from /home/khussain/delete/config.ru:4:in `require'
from /home/khussain/delete/config.ru:4
from /usr/local/lib/ruby/gems/1.8/gems/rack-1.3.5/lib/rack/builder.rb:51:in `instance_eval'
from /usr/local/lib/ruby/gems/1.8/gems/rack-1.3.5/lib/rack/builder.rb:51:in `initialize'
from /home/khussain/delete/config.ru:1:in `new'
from /home/khussain/delete/config.ru:1
如果上面不起作用，那么可能是因为您没有.Gemfile ?
这看起来像一个gem丢失了(openssl)，没有看到代码我不确定。
最好的办法是:
bundle install
如果这仍然不起作用，请尝试在Gemfile中添加openssl并再次运行bundle install