herokuにデプロイした時のエラーの原因がわかりません。

Question

実現したいこと

Railsアプリをherokuにデプロイしても表示されません。

発生している問題・エラーメッセージ

以下のエラーが出ています。

The page you were looking for doesn't exist.
You may have mistyped the address or the page may have moved.

該当のソースコード

# frozen_string_literal: true

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.6.1'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.2'

# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
gem 'bootstrap-sass', '~> 3.4.1'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'mini_racer', platforms: :ruby

# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use ActiveStorage variant
# gem 'mini_magick', '~> 4.8'

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

# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false

# Devise
gem 'devise'
gem 'omniauth'
gem 'omniauth-facebook'
gem 'omniauth-twitter'

#image
gem 'carrierwave'
gem 'rmagick'

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'sqlite3', '1.3.13'
  gem 'byebug', platforms: %i[mri mingw x64_mingw]
  gem 'factory_bot_rails', '~> 4.0'
  gem 'rspec-rails'
end

group :development do
  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
  gem 'listen', '>= 3.0.5', '< 3.2'
  gem 'web-console', '>= 3.3.0'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'rubocop', '~> 0.65.0', require: false
  gem 'spring'
  gem 'spring-commands-rspec'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

group :test do
  # Adds support for Capybara system testing and selenium driver
  gem 'capybara', '>= 2.15'
  gem 'selenium-webdriver'
  # Easy installation and use of chromedriver to run system tests with Chrome
  gem 'chromedriver-helper'
end

group :production do
# Use postgresql as the database for Active Record
gem 'pg', '>= 0.18', '< 2.0'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: %i[mingw mswin x64_mingw jruby]

# frozen_string_literal: true

Rails.application.routes.draw do
  root "static_pages#index"
  get 'static_pages/index'
  get 'static_pages/about'

  devise_for :users, controllers: { omniauth_callbacks: 'users/omniauth_callbacks' }
  devise_scope :user do
    get '/users/sign_out' => 'devise/sessions#destroy'
  end
  
  resources :microposts,   only: [:create, :destroy]
end

試したこと

$heroku logs -t
2019-03-15T06:45:07.934611+00:00 heroku[web.1]: State changed from down to starting
2019-03-15T06:45:11.607963+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 51312 -e production`
2019-03-15T06:45:19.239779+00:00 heroku[web.1]: State changed from starting to up
2019-03-15T06:45:20.975849+00:00 heroku[router]: at=info method=GET path="/" host=hidden-caverns-25881.herokuapp.com request_id=96dd1ae5-d8e0-4427-ba20-e1e9861c0921 fwd="126.99.236.223" dyno=web.1 connect=0ms service=6ms status=404 bytes=1902 protocol=https
2019-03-15T06:45:20.970035+00:00 app[web.1]: => Booting Puma
2019-03-15T06:45:20.970082+00:00 app[web.1]: => Rails 5.2.2 application starting in production
2019-03-15T06:45:20.970084+00:00 app[web.1]: => Run `rails server -h` for more startup options
2019-03-15T06:45:20.970091+00:00 app[web.1]: Puma starting in single mode...
2019-03-15T06:45:20.970093+00:00 app[web.1]: * Version 3.12.0 (ruby 2.6.1-p33), codename: Llamas in Pajamas
2019-03-15T06:45:20.970107+00:00 app[web.1]: * Min threads: 5, max threads: 5
2019-03-15T06:45:20.970112+00:00 app[web.1]: * Environment: production
2019-03-15T06:45:20.970114+00:00 app[web.1]: * Listening on tcp://0.0.0.0:51312
2019-03-15T06:45:20.970115+00:00 app[web.1]: Use Ctrl-C to stop
2019-03-15T06:45:20.970122+00:00 app[web.1]: I, [2019-03-15T06:45:20.969881 #4]  INFO -- : [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] Started GET "/" for 126.99.236.223 at 2019-03-15 06:45:20 +0000
2019-03-15T06:45:20.970927+00:00 app[web.1]: F, [2019-03-15T06:45:20.970796 #4] FATAL -- : [96dd1ae5-d8e0-4427-ba20-e1e9861c0921]
2019-03-15T06:45:20.970932+00:00 app[web.1]: F, [2019-03-15T06:45:20.970880 #4] FATAL -- : [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] ActionController::RoutingError (No route matches [GET] "/"):
2019-03-15T06:45:20.971024+00:00 app[web.1]: F, [2019-03-15T06:45:20.970937 #4] FATAL -- : [96dd1ae5-d8e0-4427-ba20-e1e9861c0921]
2019-03-15T06:45:20.971148+00:00 app[web.1]: F, [2019-03-15T06:45:20.971027 #4] FATAL -- : [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/debug_exceptions.rb:65:in `call'
2019-03-15T06:45:20.971181+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
2019-03-15T06:45:20.971189+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/railties-5.2.2/lib/rails/rack/logger.rb:38:in `call_app'
2019-03-15T06:45:20.971195+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/railties-5.2.2/lib/rails/rack/logger.rb:26:in `block in call'
2019-03-15T06:45:20.971197+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.2/lib/active_support/tagged_logging.rb:71:in `block in tagged'
2019-03-15T06:45:20.971199+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.2/lib/active_support/tagged_logging.rb:28:in `tagged'
2019-03-15T06:45:20.971200+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.2/lib/active_support/tagged_logging.rb:71:in `tagged'
2019-03-15T06:45:20.971202+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/railties-5.2.2/lib/rails/rack/logger.rb:26:in `call'
2019-03-15T06:45:20.971203+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
2019-03-15T06:45:20.971204+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/request_id.rb:27:in `call'
2019-03-15T06:45:20.971206+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/rack-2.0.6/lib/rack/method_override.rb:22:in `call'
2019-03-15T06:45:20.971207+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/rack-2.0.6/lib/rack/runtime.rb:22:in`call'
2019-03-15T06:45:20.971215+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.2/lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call'
2019-03-15T06:45:20.971217+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/executor.rb:14:in `call'
2019-03-15T06:45:20.971218+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/static.rb:127:in `call'
2019-03-15T06:45:20.971219+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/rack-2.0.6/lib/rack/sendfile.rb:111:in `call'
2019-03-15T06:45:20.971221+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/railties-5.2.2/lib/rails/engine.rb:524:in `call'
2019-03-15T06:45:20.971223+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/puma-3.12.0/lib/puma/configuration.rb:225:in `call'
2019-03-15T06:45:20.971224+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/puma-3.12.0/lib/puma/server.rb:658:in `handle_request'
2019-03-15T06:45:20.971225+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/puma-3.12.0/lib/puma/server.rb:472:in `process_client'
2019-03-15T06:45:20.971227+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/puma-3.12.0/lib/puma/server.rb:332:in `block in run'
2019-03-15T06:45:20.971229+00:00 app[web.1]: [96dd1ae5-d8e0-4427-ba20-e1e9861c0921] vendor/bundle/ruby/2.6.0/gems/puma-3.12.0/lib/puma/thread_pool.rb:133:in `block in spawn_thread'
2019-03-15T06:45:21.269136+00:00 heroku[router]: at=info method=GET path="/favicon.ico" host=hidden-caverns-25881.herokuapp.com request_id=e34a16a3-4c0f-4394-a730-1d7ecd1446f4 fwd="126.99.236.223" dyno=web.1 connect=0ms service=2ms status=304 bytes=48 protocol=https

---

何が原因かわからず、困っております。
どなたか教えていただければと思います。

Answer 1

Herokuのログには以下のようなエラーメッセージが出ているのが確認できますでしょうか？

ActionController::RoutingError (No route matches [GET] "/")

rootのルーティングがないようです。
開発環境では問題なくTOPページが表示されているコードでしょうか？

それでしたら最新のものがコミットされていないと思います。

git add .
git commit -m "commit message"
git push heroku master

それぞれエラーなく実行されるかを確認しながら行ってください。
最後のデプロイコマンドでは、デプロイ時のログの最終行付近に deploy ..done と表示されていればデプロイ成功です。
マイグレーションの必要がある場合は行ってブラウザで確認してみてください。

---

開発環境でTOPページが表示されていないのでしたら、config/routes.rbファイルを開いてrootの設定を行ってください。

Answer 2

google翻訳
探しているページは存在しません。住所を誤って入力したか、ページが移動した可能性があります。