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[Fri Aug 02 09:25:33 2013] [error] [client 1.160.226.5] Premature end of script headers: 
[ pid=10431 thr=140143980603200 file=ext/apache2/Hooks.cpp:819 time=2013-08-02 09:25:33.853 ]: The backend application (process 19691) did not send a valid HTTP response; instead, it sent nothing at all. It is possible that it has crashed; please check whether there are crashing bugs in this application.
[ pid=19691 thr=14995560 file=utils.rb:176 time=2013-08-02 09:25:33.854 ]: *** Exception ActionController::UnknownHttpMethod in application (Y?[R, accepted HTTP methods are OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, UNLOCK, VERSION-CONTROL, REPORT, CHECKOUT, CHECKIN, UNCHECKOUT, MKWORKSPACE, UPDATE, LABEL, MERGE, BASELINE-CONTROL, MKACTIVITY, ORDERPATCH, ACL, SEARCH, and PATCH) (process 19691, thread #<Thread:0x00000001c9a0d0>):
    from /var/lib/gems/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/http/request.rb:277:in `check_method'
    from /var/lib/gems/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/http/request.rb:68:in `request_method'
    from /var/lib/gems/1.9.1/gems/railties-3.2.8/lib/rails/rack/logger.rb:25:in `call_app'
    from /var/lib/gems/1.9.1/gems/railties-3.2.8/lib/rails/rack/logger.rb:16:in `call'
    from /var/lib/gems/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/request_id.rb:22:in `call'
    from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/methodoverride.rb:21:in `call'
    from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/runtime.rb:17:in `call'
    from /var/lib/gems/1.9.1/gems/activesupport-3.2.8/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
    from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/lock.rb:15:in `call'
    from /var/lib/gems/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/static.rb:62:in `call'
    from /var/lib/gems/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:136:in `forward'
    from /var/lib/gems/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:143:in `pass'
    from /var/lib/gems/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:155:in `invalidate'
    from /var/lib/gems/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:71:in `call!'
    from /var/lib/gems/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
    from /var/lib/gems/1.9.1/gems/railties-3.2.8/lib/rails/engine.rb:479:in `call'
    from /var/lib/gems/1.9.1/gems/railties-3.2.8/lib/rails/application.rb:223:in `call'
    from /var/lib/gems/1.9.1/gems/railties-3.2.8/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/request_handler.rb:96:in `process_request'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_request_handler.rb:516:in `accept_and_process_next_request'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_request_handler.rb:274:in `main_loop'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:206:in `start_request_handler'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:171:in `block in handle_spawn_application'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/utils.rb:479:in `safe_fork'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:166:in `handle_spawn_application'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:180:in `start'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:129:in `start'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:253:in `block (2 levels) in spawn_rack_application'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:246:in `block in spawn_rack_application'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server_collection.rb:82:in `block in synchronize'
    from <internal:prelude>:10:in `synchronize'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:244:in `spawn_rack_application'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:137:in `spawn_application'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
    from /usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
    from /usr/share/phusion-passenger/helper-scripts/passenger-spawn-server:99:in `<main>'