Rails5でのエラーについて

Question

###前提・実現したいこと
Ruby on Rails チュートリアル：実例を使って Rails を学ぼうでrailsを学習しています。
第３章の

• リスト 3.4: helloアクションをApplicationコントローラーに追加する
• リスト 3.5: ルートルーティングを設定する

上記を行いHerokuにデプロイしたところでApplicationエラーになり
ローカルで動かしてみると下記のエラーが出力されます。

###発生している問題・エラーメッセージ

Puma caught this error: Invalid option key: raise_on_unfiltered_parameters= (RuntimeError)
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_controller/railtie.rb:60:in `block (3 levels) in <class:Railtie>'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_controller/railtie.rb:55:in `each'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_controller/railtie.rb:55:in `block (2 levels) in <class:Railtie>'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/lazy_load_hooks.rb:43:in `instance_eval'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/lazy_load_hooks.rb:43:in `execute_hook'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/lazy_load_hooks.rb:50:in `block in run_load_hooks'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/lazy_load_hooks.rb:49:in `each'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/lazy_load_hooks.rb:49:in `run_load_hooks'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_controller/base.rb:269:in `<class:Base>'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_controller/base.rb:164:in `<module:ActionController>'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_controller/base.rb:5:in `<top (required)>'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:293:in `require'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:293:in `block in require'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:259:in `load_dependency'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.3/lib/active_support/dependencies.rb:293:in `require'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_dispatch/middleware/static.rb:77:in `ext'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_dispatch/middleware/static.rb:33:in `match?'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/actionpack-5.0.3/lib/action_dispatch/middleware/static.rb:130:in `call'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rack-2.0.3/lib/rack/sendfile.rb:111:in `call'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/railties-5.0.3/lib/rails/engine.rb:522:in `call'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/puma-3.9.1/lib/puma/configuration.rb:224:in `call'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/puma-3.9.1/lib/puma/server.rb:602:in `handle_request'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/puma-3.9.1/lib/puma/server.rb:435:in `process_client'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/puma-3.9.1/lib/puma/server.rb:299:in `block in run'
/Users/username/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/puma-3.9.1/lib/puma/thread_pool.rb:120:in `block in spawn_thread'

###該当のソースコード

class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception

  def hello
    render html: "hello, world!"
  end
end

Rails.application.routes.draw do
  root 'application#hello'
end

source 'https://rubygems.org'

gem 'rails',        '5.0.3'
gem 'puma',         '3.9.1'
gem 'sass-rails',   '5.0.6'
gem 'uglifier',     '3.2.0'
gem 'coffee-rails', '4.2.2'
gem 'jquery-rails', '4.3.1'
gem 'turbolinks',   '5.0.1'
gem 'jbuilder',     '2.7.0'

group :development, :test do
  gem 'sqlite3', '1.3.13'
  gem 'byebug',  '9.0.6', platform: :mri
end

group :development do
  gem 'web-console',           '3.5.1'
  gem 'listen',                '3.0.8'
  gem 'spring',                '2.0.2'
  gem 'spring-watcher-listen', '2.0.1'
end

group :test do
  gem 'rails-controller-testing', '1.0.2'
  gem 'minitest-reporters',       '1.1.14'
  gem 'guard',                    '2.13.0'
  gem 'guard-minitest',           '2.4.4'
end

group :production do
  gem 'pg', '0.18.4'
end

###試したこと
下記の
Gemfile
application_controller.rb
routes.rb
のみしか編集しておらず、第１、２章で同じことをやって
うまくいっていたのですが
上記のエラーはどういったことが原因でおこるのでしょう？
どなたかご教示いただけましたら、幸いです。
よろしくお願いいたします。

Answer 1

config/initializers ディレクトリに new_framework_defaults.rb というファイルがあり、そこに raise_on_unfiltered_parameters を含む行があるはずです。

その行をコメントアウトすれば直ります。

Answer 2

render text: "hello, world!"
が正解ではないでしょうか？