ruby-on-rails – 乘客错误：应用程序spawner服务器意外退出：检

乘客报告：

Passenger encountered the following error:

The application spawner server exited unexpectedly: Unexpected end-of-file detected.

Exception class:
PhusionPassenger::Railz::ApplicationSpawner::Error
Backtrace:
#  File  Line  Location
0  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/railz/application_spawner.rb  218  in `start'

1  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/spawn_manager.rb  261  in `spawn_rails_application'

2  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/abstract_server_collection.rb  126  in `lookup_or_add'

3  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/spawn_manager.rb  255  in `spawn_rails_application'

4  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/abstract_server_collection.rb  80  in `synchronize'

5  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/abstract_server_collection.rb  79  in `synchronize'

6  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/spawn_manager.rb  254  in `spawn_rails_application'

7  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/spawn_manager.rb  153  in `spawn_application'

8  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/spawn_manager.rb  286  in `handle_spawn_application'

9  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/abstract_server.rb  351  in `__send__'

10  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/abstract_server.rb  351  in `main_loop'

11  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/lib/phusion_passenger/abstract_server.rb  195  in `start_synchronously'

12  /usr/lib/ruby/gems/1.8/gems/passenger-2.2.4/bin/passenger-spawn-server  61

有任何想法吗？