【Rails5】herokuにてデプロイ後、エラーが出てしまいます。

Question

前提・実現したいこと

rails5でアプリケーションを作成しています。
herokuへデプロイしたのですが、
アクセスしてもうまく表示がされず、下記のような表示になります。

どうすればデプロイしたアプリケーションがうまく表示されるのでしょうか？

発生している問題・エラーメッセージ

該当のソースコード

2019-08-28T19:38:14.776770+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=sample.herokuapp.com request_id=470f6a9a-e9e1-45aa-ad70-10e1cb7f2163 fwd="121.117.4.1" dyno= connect= service= status=503 bytes= protocol=https
2019-08-28T19:38:15.107158+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=sample.herokuapp.com request_id=7348cdc3-ffa4-49c1-9c35-20f1ef0439ad fwd="121.117.4.1" dyno= connect= service= status=503 bytes= protocol=https

        from /app/bin/rails:4:in `<main>'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
        from /app/config/environment.rb:5:in `<top (required)>'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/application.rb:361:in `initialize!'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/initializable.rb:60:in `run_initializers'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:205:in `tsort_each'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:226:in `tsort_each'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:347:in `each_strongly_connected_component'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:347:in `call'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:347:in `each'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:349:in `block in each_strongly_connected_component'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:431:in `each_strongly_connected_component_from'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/tsort.rb:228:in `block in tsort_each'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/initializable.rb:61:in `block in run_initializers'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `run'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `instance_exec'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/application/finisher.rb:69:in `block in <module:Finisher>'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/application/finisher.rb:69:in `each'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/engine.rb:356:in `eager_load!'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/engine.rb:475:in `eager_load!'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/engine.rb:475:in `each'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/engine.rb:477:in `block in eager_load!'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/engine.rb:477:in `each'
        from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.3/lib/rails/engine.rb:478:in `block (2 levels) in eager_load!'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:246:in `require_dependency'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/active_support.rb:85:in `depend_on'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:334:in `depend_on'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/active_support.rb:47:in `require_or_load'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/active_support.rb:16:in `allow_bootsnap_retry'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/active_support.rb:48:in `block in require_or_load'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:356:in `require_or_load'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:37:in `load_interlock'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:13:in `loading'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/concurrency/share_lock.rb:151:in `exclusive'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:14:in `block in loading'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:37:in `block in load_interlock'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:378:in `block in require_or_load'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
        from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
        from /app/vendor/bundle/ruby/2.5.0/gems/activestorage-5.2.3/app/models/active_storage/blob.rb:16:in `<top (required)>'
        from /app/vendor/bundle/ruby/2.5.0/gems/activestorage-5.2.3/app/models/active_storage/blob.rb:235:in `<class:Blob>'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:51:in `run_load_hooks'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:51:in `each'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:52:in `block in run_load_hooks'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:67:in `execute_hook'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:62:in `with_execution_control'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:71:in `block in execute_hook'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:71:in `instance_eval'
        from /app/vendor/bundle/ruby/2.5.0/gems/activestorage-5.2.3/lib/active_storage/engine.rb:95:in `block (2 levels) in <class:Engine>'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/erb.rb:876:in `result'
        from /app/vendor/ruby-2.5.3/lib/ruby/2.5.0/erb.rb:876:in `eval'
        from (erb):12:in `<main>'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/core_ext/module/delegation.rb:271:in `method_missing'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/encrypted_configuration.rb:38:in `options'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/encrypted_configuration.rb:33:in `config'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/encrypted_configuration.rb:21:in `read'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/encrypted_file.rb:42:in `read'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/encrypted_file.rb:79:in `decrypt'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/messages/rotator.rb:21:in `decrypt_and_verify'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/message_encryptor.rb:157:in `decrypt_and_verify'
        from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/message_encryptor.rb:183:in `_decrypt'
/app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.3/lib/active_support/message_encryptor.rb:206:in `rescue in _decrypt': ActiveSupport::MessageEncryptor::InvalidMessage (ActiveSupport::MessageEncryptor::InvalidMessage)

文字数制限のため、コメントにて追記しております。
ご確認いただけますと幸いです。

試したこと

① gem 'rails_12factor', group: :production の追加

②　$ heroku restart --app application_name

③　$ heroku restart web.1 --app application_name　（WebDynoが止まってしまっている？のでリスタート）
→ web.1: crashed 2019/08/28 16:41:06 +0000 (~ 3h ago)

補足情報（FW/ツールのバージョンなど）

cloud9にて開発
Rails 5.2.3
ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-linux]

cloud9では動作します。

一週間ほど解決できず困ってます。。
どなたかご教示いただけますと幸いです。。

Comments

[rhiroe]

$heroku run rails db:migrate は実行しましたか？

[ussu]

Mugheart さん
コメントありがとうございます。
もちろん実行しました。

Answer 1

環境変数 RAILS_MASTER_KEY を/master.keyの値で指定してください。

Comments

[ussu]

Mugheart さん
ご回答ありがとうございます！
ご指摘の通り $ heroku config:set RAILS_MASTER_KEY=マスターキーの値で解決することができましたm(_ _)m
ありがとうございました！

Answer 2

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

ruby '2.5.3'

gem 'rails', '> 5.2.3'
gem 'mysql2', '>= 0.4.4', '< 0.6.0'
gem 'puma', '> 3.11'
gem 'sass-rails', '> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '> 4.2'
gem 'turbolinks', '> 5'
gem 'jbuilder', '> 2.5'

gem 'bcrypt', '~> 3.1.7'

gem 'bootsnap', '>= 1.1.0', require: false

group :development, :test do
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end

group :development do
gem 'web-console', '>= 3.3.0'
gem 'listen', '>= 3.0.5', '< 3.2'
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
end

gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

gem "kaminari"

gem "carrierwave"

gem "rmagick"

gem "mini_magick"

gem "jquery-rails"

group :production do
gem 'pg', '>= 0.18', '< 2.0'
end

gem 'rails_12factor', group: :production