我无法运行本地主机

所以我用一个简单的运行我的本地主机

 rails s

它开始正常：

 => Booting WEBrick
 => Rails 4.1.8 application starting in development on http://0.0.0.0:3000
 => Run 'rails server -h' for more start up options
 => Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
 => Ctrl-C to shutdown server

然后出现此消息：

 A server is already running. Check C:/User/yahshef/sites/game/tmp/pids/server.pids.
 Exiting

然后我检查了'C：/User/yahshef/sites/game/tmp/pids/server.pids'，里面是：

9552

我删除了9552，但是当我运行它时，它像前一个一样开始运行良好：

 => Booting WEBrick
 => Rails 4.1.8 application starting in development on http://0.0.0.0:3000
 => Run 'rails server -h' for more start up options
 => Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
 => Ctrl-C to shutdown server

然后，这发生了很大的变化，但仍然是一个错误:(，它显示了这一点：

Exiting
C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.5.3/lib/rack/server.rb:353:in `kill': Invalid argument (Errno::EINVAL)
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.5.3/lib/rack/server.rb:353:in `pidfile_process_status'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.5.3/lib/rack/server.rb:340:in `check_pid!'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/rack-1.5.3/lib/rack/server.rb:246:in `start'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/ralities-4.1.8/lib/rails/commands/server.rb:69:in `server'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/ralities-4.1.8/lib/rails/commands/commands_tasks.rb:81:in `block in server'

        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/ralities-4.1.8/lib/rails/commands/commands_tasks.rb:76:in `tap'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/ralities-4.1.8/lib/rails/commands/commands_tasks.rb:76:in `server'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/ralities-4.1.8/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/ralities-4.1.8/lib/rails/commands.rb:17:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

有人知道如何解决这个问题吗？我很感激。

编辑：

请注意，我在发布此问题之前进行了研究