Здравствуйте, я получаю ExecJS :: RuntimeError в Demo # index

Ниже строка 6, которая была выделена, а ниже - мой полный след. Может ли кто-нибудь из A: указать мне правильное направление для отладки этого, а также хороший справочник по отладке рельсов. Я новичок в рельсах. Я думаю, яМне не хватает драгоценного камня (я проверил, чтобы убедиться, что там есть турболинки) или что-то в турболинках неправильно. Я'm с использованием Rails 4 с использованием установщика rails (после обновления gems и rails, установки связки и т. д.).

Ниже также мой gemfile

Строка 6 выделена:

 true %>

Ниже мой полный след:

execjs (1.4.0) lib/execjs/external_runtime.rb:142:in `exec_runtime'
execjs (1.4.0) lib/execjs/external_runtime.rb:28:in `block in exec'
execjs (1.4.0) lib/execjs/external_runtime.rb:41:in `compile_to_tempfile'
execjs (1.4.0) lib/execjs/external_runtime.rb:27:in `exec'
execjs (1.4.0) lib/execjs/external_runtime.rb:19:in `eval'
execjs (1.4.0) lib/execjs/external_runtime.rb:33:in `call'
coffee-script (2.2.0) lib/coffee_script.rb:57:in `compile'
tilt (1.4.1) lib/tilt/coffee.rb:46:in `evaluate'
tilt (1.4.1) lib/tilt/template.rb:103:in `render'
sprockets (2.10.0) lib/sprockets/context.rb:197:in `block in evaluate'
sprockets (2.10.0) lib/sprockets/context.rb:194:in `each'
sprockets (2.10.0) lib/sprockets/context.rb:194:in `evaluate'
sprockets (2.10.0) lib/sprockets/processed_asset.rb:12:in `initialize'
sprockets (2.10.0) lib/sprockets/base.rb:374:in `new'
sprockets (2.10.0) lib/sprockets/base.rb:374:in `block in build_asset'
sprockets (2.10.0) lib/sprockets/base.rb:395:in `circular_call_protection'
sprockets (2.10.0) lib/sprockets/base.rb:373:in `build_asset'
sprockets (2.10.0) lib/sprockets/index.rb:94:in `block in build_asset'
sprockets (2.10.0) lib/sprockets/caching.rb:58:in `cache_asset'
sprockets (2.10.0) lib/sprockets/index.rb:93:in `build_asset'
sprockets (2.10.0) lib/sprockets/base.rb:287:in `find_asset'
sprockets (2.10.0) lib/sprockets/index.rb:61:in `find_asset'
sprockets (2.10.0) lib/sprockets/processed_asset.rb:111:in `block in resolve_dependencies'
sprockets (2.10.0) lib/sprockets/processed_asset.rb:105:in `each'
sprockets (2.10.0) lib/sprockets/processed_asset.rb:105:in `resolve_dependencies'
sprockets (2.10.0) lib/sprockets/processed_asset.rb:97:in `build_required_assets'
sprockets (2.10.0) lib/sprockets/processed_asset.rb:16:in `initialize'
sprockets (2.10.0) lib/sprockets/base.rb:374:in `new'
sprockets (2.10.0) lib/sprockets/base.rb:374:in `block in build_asset'
sprockets (2.10.0) lib/sprockets/base.rb:395:in `circular_call_protection'
sprockets (2.10.0) lib/sprockets/base.rb:373:in `build_asset'
sprockets (2.10.0) lib/sprockets/index.rb:94:in `block in build_asset'
sprockets (2.10.0) lib/sprockets/caching.rb:58:in `cache_asset'
sprockets (2.10.0) lib/sprockets/index.rb:93:in `build_asset'
sprockets (2.10.0) lib/sprockets/base.rb:287:in `find_asset'
sprockets (2.10.0) lib/sprockets/index.rb:61:in `find_asset'
sprockets (2.10.0) lib/sprockets/bundled_asset.rb:16:in `initialize'
sprockets (2.10.0) lib/sprockets/base.rb:377:in `new'
sprockets (2.10.0) lib/sprockets/base.rb:377:in `build_asset'
sprockets (2.10.0) lib/sprockets/index.rb:94:in `block in build_asset'
sprockets (2.10.0) lib/sprockets/caching.rb:58:in `cache_asset'
sprockets (2.10.0) lib/sprockets/index.rb:93:in `build_asset'
sprockets (2.10.0) lib/sprockets/base.rb:287:in `find_asset'
sprockets (2.10.0) lib/sprockets/index.rb:61:in `find_asset'
sprockets (2.10.0) lib/sprockets/environment.rb:75:in `find_asset'
sprockets (2.10.0) lib/sprockets/base.rb:295:in `[]'
sprockets-rails (2.0.0) lib/sprockets/rails/helper.rb:141:in `lookup_asset_for_path'
sprockets-rails (2.0.0) lib/sprockets/rails/helper.rb:90:in `block in javascript_include_tag'
sprockets-rails (2.0.0) lib/sprockets/rails/helper.rb:89:in `map'
sprockets-rails (2.0.0) lib/sprockets/rails/helper.rb:89:in `javascript_include_tag'
app/views/layouts/application.html.erb:6:in `_app_views_layouts_application_html_erb__93722521_39251544'
actionpack (4.0.0.rc1) lib/action_view/template.rb:143:in `block in render'
activesupport (4.0.0.rc1) lib/active_support/notifications.rb:161:in `instrument'
actionpack (4.0.0.rc1) lib/action_view/template.rb:141:in `render'
actionpack (4.0.0.rc1) lib/action_view/renderer/template_renderer.rb:61:in `render_with_layout'
actionpack (4.0.0.rc1) lib/action_view/renderer/template_renderer.rb:47:in `render_template'
actionpack (4.0.0.rc1) lib/action_view/renderer/template_renderer.rb:17:in `render'
actionpack (4.0.0.rc1) lib/action_view/renderer/renderer.rb:42:in `render_template'
actionpack (4.0.0.rc1) lib/action_view/renderer/renderer.rb:23:in `render'
actionpack (4.0.0.rc1) lib/abstract_controller/rendering.rb:127:in `_render_template'
actionpack (4.0.0.rc1) lib/action_controller/metal/streaming.rb:219:in `_render_template'
actionpack (4.0.0.rc1) lib/abstract_controller/rendering.rb:120:in `render_to_body'
actionpack (4.0.0.rc1) lib/action_controller/metal/rendering.rb:33:in `render_to_body'
actionpack (4.0.0.rc1) lib/action_controller/metal/renderers.rb:26:in `render_to_body'
actionpack (4.0.0.rc1) lib/abstract_controller/rendering.rb:97:in `render'
actionpack (4.0.0.rc1) lib/action_controller/metal/rendering.rb:16:in `render'
actionpack (4.0.0.rc1) lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
activesupport (4.0.0.rc1) lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/benchmark.rb:295:in `realtime'
activesupport (4.0.0.rc1) lib/active_support/core_ext/benchmark.rb:12:in `ms'
actionpack (4.0.0.rc1) lib/action_controller/metal/instrumentation.rb:41:in `block in render'
actionpack (4.0.0.rc1) lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
activerecord (4.0.0.rc1) lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
actionpack (4.0.0.rc1) lib/action_controller/metal/instrumentation.rb:40:in `render'
actionpack (4.0.0.rc1) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
actionpack (4.0.0.rc1) lib/action_controller/metal/implicit_render.rb:5:in `send_action'
actionpack (4.0.0.rc1) lib/abstract_controller/base.rb:189:in `process_action'
actionpack (4.0.0.rc1) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.0.0.rc1) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (4.0.0.rc1) lib/active_support/callbacks.rb:422:in `_run__842584183__process_action__callbacks'
activesupport (4.0.0.rc1) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0.rc1) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (4.0.0.rc1) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.0.0.rc1) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.0.0.rc1) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.0.0.rc1) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.0.0.rc1) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.0.0.rc1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.0.0.rc1) lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
activerecord (4.0.0.rc1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.0.0.rc1) lib/abstract_controller/base.rb:136:in `process'
actionpack (4.0.0.rc1) lib/abstract_controller/rendering.rb:44:in `process'
actionpack (4.0.0.rc1) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.0.0.rc1) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.0.0.rc1) lib/action_controller/metal.rb:231:in `block in action'
actionpack (4.0.0.rc1) lib/action_dispatch/routing/route_set.rb:80:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
actionpack (4.0.0.rc1) lib/action_dispatch/routing/route_set.rb:48:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.0.0.rc1) lib/action_dispatch/journey/router.rb:59:in `each'
actionpack (4.0.0.rc1) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/routing/route_set.rb:654:in `call'
rack (1.5.2) lib/rack/etag.rb:23:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:25:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/flash.rb:241:in `call'
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/cookies.rb:486:in `call'
activerecord (4.0.0.rc1) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.0.0.rc1) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
activerecord (4.0.0.rc1) lib/active_record/migration.rb:366:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.0.0.rc1) lib/active_support/callbacks.rb:392:in `_run__736096468__call__callbacks'
activesupport (4.0.0.rc1) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/reloader.rb:64:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.0.rc1) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.0.0.rc1) lib/rails/rack/logger.rb:21:in `block in call'
activesupport (4.0.0.rc1) lib/active_support/tagged_logging.rb:67:in `block in tagged'
activesupport (4.0.0.rc1) lib/active_support/tagged_logging.rb:25:in `tagged'
activesupport (4.0.0.rc1) lib/active_support/tagged_logging.rb:67:in `tagged'
railties (4.0.0.rc1) lib/rails/rack/logger.rb:21:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.0.0.rc1) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.0.0.rc1) lib/action_dispatch/middleware/static.rb:64:in `call'
railties (4.0.0.rc1) lib/rails/engine.rb:511:in `call'
railties (4.0.0.rc1) lib/rails/application.rb:96:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'

GEMFILE Ниже для этого проекта

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.0.rc1'

# Use sqlite3 as the database for Active Record
gem 'sqlite3'

# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.0.rc1'

# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'

# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes
gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'

# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 1.0.1'

group :doc do
  # bundle exec rake doc:rails generates the API under doc/api.
  gem 'sdoc', require: false
end

# Use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# Use unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano', group: :development

# Use debugger
# gem 'debugger', group: [:development, :test]