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Stacktraces associated with this issue

In my application:

Encountered error "TypeError: Object function Symbol(description) {
      var value = new SymbolValue(description);
      if (!(this instanceof Symbol))
        return value;
      throw new TypeError('Symbol cannot be new\'ed');
    } has no method 'for'" when prerendering ActiveToggle with {"url":"/follows.json?argument_id=7","initialState":true,"true_props":{"method":"DELETE","icon":"bell-slash","label":"Ontvolgen"},"false_props":{"method":"POST","icon":"bell","label":"Volgen"}}
var value = new SymbolValue(description);
if (!(this instanceof Symbol))
return value;
throw new TypeError('Symbol cannot be new\'ed');
} has no method 'for'
makeAction ((execjs):19894:50)
(execjs):20126:58
(execjs):21679:7
Array.forEach (native)
(execjs):21678:31
Array.forEach (native)
Object.eachObject ((execjs):21677:5)
Alt.createActions ((execjs):20120:10)
Object./Users/thom1/Developer/argu/app/assets/javascripts/actions/NotificationActions.js.../alt ((execjs):19632:22)
s ((execjs):19614:262)
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/ruby_racer_runtime.rb:15:in `rescue in block in initialize'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/ruby_racer_runtime.rb:12:in `block in initialize'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/ruby_racer_runtime.rb:75:in `block in lock'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/ruby_racer_runtime.rb:73:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/ruby_racer_runtime.rb:73:in `Locker'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/ruby_racer_runtime.rb:73:in `lock'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/ruby_racer_runtime.rb:9:in `initialize'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/runtime.rb:44:in `new'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/runtime.rb:44:in `compile'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/execjs-2.5.2/lib/execjs/module.rb:27:in `compile'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/react-rails-1.0.0/lib/react/renderer.rb:42:in `context'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/react-rails-1.0.0/lib/react/renderer.rb:54:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/react-rails-1.0.0/lib/react/renderer.rb:29:in `block in render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:64:in `block (2 levels) in with'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:63:in `handle_interrupt'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:63:in `block in with'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:60:in `handle_interrupt'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:60:in `with'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/react-rails-1.0.0/lib/react/renderer.rb:28:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/react-rails-1.0.0/lib/react/rails/view_helper.rb:11:in `block in react_component'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/helpers/capture_helper.rb:38:in `block in capture'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/helpers/capture_helper.rb:202:in `with_output_buffer'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/helpers/capture_helper.rb:38:in `capture'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/helpers/tag_helper.rb:106:in `content_tag'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/react-rails-1.0.0/lib/react/rails/view_helper.rb:23:in `react_component'
/Users/thom1/Developer/argu/app/views/arguments/_body.html.slim:14:in `_app_views_arguments__body_html_slim___602666710274837904_70158035505720'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/template.rb:145:in `block in render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:166:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/template.rb:333:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/template.rb:143:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/partial_renderer.rb:339:in `render_partial'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/partial_renderer.rb:310:in `block in render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/abstract_renderer.rb:39:in `block in instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `block in instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/abstract_renderer.rb:39:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/partial_renderer.rb:309:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/renderer.rb:47:in `render_partial'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/helpers/rendering_helper.rb:35:in `render'
/Users/thom1/Developer/argu/app/views/arguments/show.html.slim:11:in `_app_views_arguments_show_html_slim___1486648139091346661_70158030805700'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/template.rb:145:in `block in render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:166:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/template.rb:333:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/template.rb:143:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:54:in `block (2 levels) in render_template'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/abstract_renderer.rb:39:in `block in instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `block in instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/abstract_renderer.rb:39:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:53:in `block in render_template'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:61:in `render_with_layout'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:52:in `render_template'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:14:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/renderer.rb:42:in `render_template'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/renderer/renderer.rb:23:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/rendering.rb:100:in `_render_template'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/streaming.rb:217:in `_render_template'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/rendering.rb:83:in `render_to_body'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/rendering.rb:32:in `render_to_body'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/renderers.rb:37:in `render_to_body'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/abstract_controller/rendering.rb:25:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/rendering.rb:16:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:44:in `block (2 levels) in render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/core_ext/benchmark.rb:12:in `ms'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:44:in `block in render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:87:in `cleanup_view_runtime'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activerecord-4.2.3/lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:43:in `render'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/mime_responds.rb:215:in `respond_to'
/Users/thom1/Developer/argu/app/controllers/arguments_controller.rb:15:in `show'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/abstract_controller/base.rb:198:in `process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/rendering.rb:10:in `process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/abstract_controller/callbacks.rb:20:in `block in process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:553:in `block (2 levels) in compile'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:496:in `block (2 levels) in around'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:311:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:311:in `block (2 levels) in halting'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/core_ext/time/zones.rb:48:in `use_zone'
/Users/thom1/Developer/argu/app/controllers/application_controller.rb:161:in `set_time_zone'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:430:in `block in make_lambda'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:310:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:310:in `block in halting'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:495:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:495:in `block in around'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:88:in `run_callbacks'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/abstract_controller/callbacks.rb:19:in `process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/rescue.rb:29:in `process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `block in instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `instrument'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activerecord-4.2.3/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/abstract_controller/base.rb:137:in `process'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionview-4.2.3/lib/action_view/rendering.rb:30:in `process'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal.rb:196:in `dispatch'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_controller/metal.rb:237:in `block in action'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:76:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:76:in `dispatch'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:45:in `serve'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/journey/router.rb:43:in `block in serve'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/journey/router.rb:30:in `each'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/journey/router.rb:30:in `serve'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:821:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/omniauth-1.2.2/lib/omniauth/strategy.rb:186:in `call!'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/omniauth-1.2.2/lib/omniauth/strategy.rb:164:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/omniauth-1.2.2/lib/omniauth/strategy.rb:186:in `call!'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/omniauth-1.2.2/lib/omniauth/strategy.rb:164:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/omniauth-1.2.2/lib/omniauth/builder.rb:59:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/meta_request-0.3.4/lib/meta_request/middlewares/app_request_handler.rb:13:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/meta_request-0.3.4/lib/meta_request/middlewares/meta_request_handler.rb:13:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/http_accept_language-2.0.5/lib/http_accept_language/middleware.rb:14:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-attack-4.3.0/lib/rack/attack.rb:104:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-cors-0.4.0/lib/rack/cors.rb:80:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/warden-1.2.3/lib/warden/manager.rb:35:in `block in call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/warden-1.2.3/lib/warden/manager.rb:34:in `catch'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/warden-1.2.3/lib/warden/manager.rb:34:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/etag.rb:24:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/conditionalget.rb:25:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/head.rb:13:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/params_parser.rb:27:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/flash.rb:260:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:225:in `context'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:220:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/cookies.rb:560:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activerecord-4.2.3/lib/active_record/query_cache.rb:36:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:84:in `run_callbacks'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/reloader.rb:73:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/bugsnag-2.8.8/lib/bugsnag/rack.rb:33:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-contrib-1.2.0/lib/rack/contrib/response_headers.rb:17:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/meta_request-0.3.4/lib/meta_request/middlewares/headers.rb:16:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/better_errors-2.1.1/lib/better_errors/middleware.rb:84:in `protected_app_call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/better_errors-2.1.1/lib/better_errors/middleware.rb:79:in `better_errors_call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/better_errors-2.1.1/lib/better_errors/middleware.rb:57:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/web-console-2.0.0/lib/action_dispatch/debug_exceptions.rb:18:in `middleware_call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/web-console-2.0.0/lib/action_dispatch/debug_exceptions.rb:13:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.3/lib/rails/rack/logger.rb:38:in `call_app'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.3/lib/rails/rack/logger.rb:20:in `block in call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `block in tagged'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:26:in `tagged'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `tagged'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.3/lib/rails/rack/logger.rb:20:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/quiet_assets-1.1.0/lib/quiet_assets.rb:27:in `call_with_quiet_assets'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/request_store-1.1.0/lib/request_store/middleware.rb:8:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/request_id.rb:21:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/methodoverride.rb:22:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/runtime.rb:18:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.3/lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/lock.rb:17:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/static.rb:116:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/sendfile.rb:113:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.3/lib/rails/engine.rb:518:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.3/lib/rails/application.rb:165:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.3/lib/rails/railtie.rb:194:in `public_send'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.3/lib/rails/railtie.rb:194:in `method_missing'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-pjax-0.8.0/lib/rack/pjax.rb:12:in `call'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:576:in `process_client'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:670:in `worker_loop'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:525:in `spawn_missing_workers'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:140:in `start'
/Users/thom1/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/unicorn-4.8.3/bin/unicorn_rails:209:in `<top (required)>'
/Users/thom1/.rbenv/versions/2.1.3/bin/unicorn_rails:23:in `load'
/Users/thom1/.rbenv/versions/2.1.3/bin/unicorn_rails:23:in `<top (required)>'
-e:1:in `load'
-e:1:in `<main>'

and the demo boilerplate:

Encountered error "TypeError: undefined is not a function (evaluating '_esSymbol2['default']['for']('alt/' + actionId)')" when prerendering Blink with {}
makeAction@(execjs):21780:50
(execjs):22012:58
(execjs):23662:8
forEach@[native code]
(execjs):23661:38
forEach@[native code]
eachObject@(execjs):23660:12
createActions@(execjs):22006:20
generateActions@(execjs):21941:32
(execjs):21665:37
s@(execjs):21654:266
(execjs):21654:314
(execjs):21679:27
s@(execjs):21654:266
(execjs):21654:314
(execjs):21658:23
s@(execjs):21654:266
e@(execjs):21654:434
(execjs):21654:451
(execjs):47110:21
(execjs):1:46
global code@(execjs):1:58
/Library/Ruby/Gems/2.0.0/gems/execjs-2.5.2/lib/execjs/external_runtime.rb:39:in `exec'
/Library/Ruby/Gems/2.0.0/gems/execjs-2.5.2/lib/execjs/external_runtime.rb:14:in `initialize'
/Library/Ruby/Gems/2.0.0/gems/execjs-2.5.2/lib/execjs/runtime.rb:44:in `new'
/Library/Ruby/Gems/2.0.0/gems/execjs-2.5.2/lib/execjs/runtime.rb:44:in `compile'
/Library/Ruby/Gems/2.0.0/gems/execjs-2.5.2/lib/execjs/module.rb:27:in `compile'
/Library/Ruby/Gems/2.0.0/gems/react-rails-1.0.0/lib/react/renderer.rb:42:in `context'
/Library/Ruby/Gems/2.0.0/gems/react-rails-1.0.0/lib/react/renderer.rb:54:in `render'
/Library/Ruby/Gems/2.0.0/gems/react-rails-1.0.0/lib/react/renderer.rb:29:in `block in render'
/Library/Ruby/Gems/2.0.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:64:in `block (2 levels) in with'
/Library/Ruby/Gems/2.0.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:63:in `handle_interrupt'
/Library/Ruby/Gems/2.0.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:63:in `block in with'
/Library/Ruby/Gems/2.0.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:60:in `handle_interrupt'
/Library/Ruby/Gems/2.0.0/gems/connection_pool-2.2.0/lib/connection_pool.rb:60:in `with'
/Library/Ruby/Gems/2.0.0/gems/react-rails-1.0.0/lib/react/renderer.rb:28:in `render'
/Library/Ruby/Gems/2.0.0/gems/react-rails-1.0.0/lib/react/rails/view_helper.rb:11:in `block in react_component'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/helpers/capture_helper.rb:38:in `block in capture'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/helpers/capture_helper.rb:202:in `with_output_buffer'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/helpers/capture_helper.rb:38:in `capture'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/helpers/tag_helper.rb:106:in `content_tag'
/Library/Ruby/Gems/2.0.0/gems/react-rails-1.0.0/lib/react/rails/view_helper.rb:23:in `react_component'
/Users/thom1/Developer/ruby/browserify-react-rails/app/views/application/home.html.erb:2:in `_app_views_application_home_html_erb___4361258903447812865_70259649878480'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/template.rb:145:in `block in render'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:166:in `instrument'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/template.rb:333:in `instrument'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/template.rb:143:in `render'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:54:in `block (2 levels) in render_template'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/abstract_renderer.rb:39:in `block in instrument'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `block in instrument'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `instrument'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/abstract_renderer.rb:39:in `instrument'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:53:in `block in render_template'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:61:in `render_with_layout'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:52:in `render_template'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/template_renderer.rb:14:in `render'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/renderer.rb:42:in `render_template'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/renderer/renderer.rb:23:in `render'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/rendering.rb:100:in `_render_template'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/streaming.rb:217:in `_render_template'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/rendering.rb:83:in `render_to_body'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/rendering.rb:32:in `render_to_body'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/renderers.rb:37:in `render_to_body'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/abstract_controller/rendering.rb:25:in `render'
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/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:44:in `block (2 levels) in render'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
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/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/core_ext/benchmark.rb:12:in `ms'
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/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:87:in `cleanup_view_runtime'
/Library/Ruby/Gems/2.0.0/gems/activerecord-4.2.3/lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:43:in `render'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/implicit_render.rb:10:in `default_render'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/implicit_render.rb:5:in `send_action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/abstract_controller/base.rb:198:in `process_action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/rendering.rb:10:in `process_action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/abstract_controller/callbacks.rb:20:in `block in process_action'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:553:in `block (2 levels) in compile'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:88:in `run_callbacks'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/abstract_controller/callbacks.rb:19:in `process_action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/rescue.rb:29:in `process_action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `block in instrument'
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/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `instrument'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
/Library/Ruby/Gems/2.0.0/gems/activerecord-4.2.3/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/abstract_controller/base.rb:137:in `process'
/Library/Ruby/Gems/2.0.0/gems/actionview-4.2.3/lib/action_view/rendering.rb:30:in `process'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal.rb:196:in `dispatch'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_controller/metal.rb:237:in `block in action'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:76:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:76:in `dispatch'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:45:in `serve'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/journey/router.rb:43:in `block in serve'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/journey/router.rb:30:in `each'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/journey/router.rb:30:in `serve'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/routing/route_set.rb:821:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/etag.rb:24:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/conditionalget.rb:25:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/head.rb:13:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/params_parser.rb:27:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/flash.rb:260:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:225:in `context'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:220:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/cookies.rb:560:in `call'
/Library/Ruby/Gems/2.0.0/gems/activerecord-4.2.3/lib/active_record/query_cache.rb:36:in `call'
/Library/Ruby/Gems/2.0.0/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
/Library/Ruby/Gems/2.0.0/gems/activerecord-4.2.3/lib/active_record/migration.rb:377:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:84:in `run_callbacks'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/reloader.rb:73:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
/Library/Ruby/Gems/2.0.0/gems/web-console-2.1.3/lib/web_console/middleware.rb:37:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
/Library/Ruby/Gems/2.0.0/gems/railties-4.2.3/lib/rails/rack/logger.rb:38:in `call_app'
/Library/Ruby/Gems/2.0.0/gems/railties-4.2.3/lib/rails/rack/logger.rb:20:in `block in call'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `block in tagged'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:26:in `tagged'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `tagged'
/Library/Ruby/Gems/2.0.0/gems/railties-4.2.3/lib/rails/rack/logger.rb:20:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/request_id.rb:21:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/methodoverride.rb:22:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/runtime.rb:18:in `call'
/Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.3/lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/lock.rb:17:in `call'
/Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.3/lib/action_dispatch/middleware/static.rb:116:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/sendfile.rb:113:in `call'
/Library/Ruby/Gems/2.0.0/gems/railties-4.2.3/lib/rails/engine.rb:518:in `call'
/Library/Ruby/Gems/2.0.0/gems/railties-4.2.3/lib/rails/application.rb:165:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/lock.rb:17:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/content_length.rb:15:in `call'
/Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/handler/webrick.rb:88:in `service'
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'
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