//= require jquery.raty.jsを読み込まないエラーに関して

前提・実現したいこと

//= require jquery.raty.jsを読み込ませて、
index.html.erbに星を表示させたい

発生している問題・エラーメッセージ

//= require jquery.raty.jsを追加すると
アプリケーションが立ち上がらず、下記のエラーがでます。

Sprockets::FileNotFound in Books#index
Showing /home/ec2-user/environment/Book_for_Review/app/views/users/_info.html.erb where line #5 raised:

couldn't find file 'jquery.raty.js' with type 'application/javascript'
Checked in these paths: 
  /home/ec2-user/environment/Book_for_Review/app/assets/config
  /home/ec2-user/environment/Book_for_Review/app/assets/images
  /home/ec2-user/environment/Book_for_Review/app/assets/javascripts
  /home/ec2-user/environment/Book_for_Review/app/assets/stylesheets
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/jquery-rails-4.4.0/vendor/assets/javascripts
  /home/ec2-user/.rvm/gems/ruby-2.6.3/bundler/gems/refile-46b4178654e6/app/assets/javascripts
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/coffee-rails-4.2.2/lib/assets/javascripts
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/actioncable-5.2.6/lib/assets/compiled
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activestorage-5.2.6/app/assets/javascripts
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/actionview-5.2.6/lib/assets/compiled
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/turbolinks-source-5.2.0/lib/assets/javascripts
  /home/ec2-user/environment/Book_for_Review/node_modules
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/popper_js-1.16.0/assets/javascripts
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/bootstrap-4.6.0/assets/stylesheets
  /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/bootstrap-4.6.0/assets/javascripts

Extracted source (around line #21):

              
//= require turbolinks
//= require_tree .
//= require jquery.raty.js

該当のソースコード

applicationjs
// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, or any plugin's
// vendor/assets/javascripts directory can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// compiled file. JavaScript code in this file should be added after the last require_* statement.
//
// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
// about supported directives.
//= require jquery3
//= require popper
//= require bootstrap-sprockets
//= require jquery
//
//= require rails-ujs
//= require activestorage
//= require turbolinks
//= require jquery.raty.js
//= require_tree .

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

ruby '2.6.3'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.6'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# 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

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
  gem 'pry-byebug'
end

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

group :test do
  gem 'capybara', '>= 2.15'
  gem 'rspec-rails'
  gem "factory_bot_rails"
  gem 'faker'

end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
gem 'devise'
gem "refile", require: "refile/rails", github: 'manfe/refile'
gem "refile-mini_magick"
gem 'bootstrap', '~> 4.5'
gem 'jquery-rails'