デプロイできません　(Railsチュートリアル第１章において）

Railsを現在勉強しており、Railsチュートリアル第一章を進めているのでが、
herokuへのデプロイの際、git push heroku masterを入力後にエラーが表示され、
デプロイできなくなってしまいました。
Qiita等も参考にしたのですが、解決できませんでした。

宜しくお願いいたします。

エラー
remote:  !
remote:  !     Failed to install gems via Bundler.
remote:  !     Detected sqlite3 gem which is not supported on Heroku:
remote:  !     https://devcenter.heroku.com/articles/sqlite3
remote:  !

Gemfile
1
2source 'https://rubygems.org'
3git_source(:github) { |repo| "https://github.com/#{repo}.git" }
4
5ruby '2.6.3'
6
7# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
8gem 'rails', '~> 6.0.3'
9# Use sqlite3 as the database for Active Record
10gem 'sqlite3', '~> 1.4'
11# Use Puma as the app server
12gem 'puma', '~> 3.11'
13# Use SCSS for stylesheets
14gem 'sass-rails', '~> 5'
15# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
16gem 'webpacker', '~> 4.0'
17# Turbolinks makes navigating your web application faster.
18# Read more: https://github.com/turbolinks/turbolinks
19gem 'turbolinks', '~> 5'
20# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
21gem 'jbuilder', '~> 2.7'
22# Use Redis adapter to run Action Cable in production
23# gem 'redis', '~> 4.0'
24# Use Active Model has_secure_password
25# gem 'bcrypt', '~> 3.1.7'
26
27# Use Active Storage variant
28# gem 'image_processing', '~> 1.2'
29
30# Reduces boot times through caching; required in config/boot.rb
31gem 'bootsnap', '>= 1.4.2', require: false
32
33group :development, :test do
34  # Call 'byebug' anywhere in the code to stop execution and get a
35  # debugger console
36  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
37end
38
39group :development do
40  # Access an interactive console on exception pages or by calling 'console'
41  # anywhere in the code.
42  gem 'web-console', '>= 3.3.0'
43  gem 'listen', '>= 3.0.5', '< 3.2'
44  # Spring speeds up development by keeping your application running in the
45  # background. Read more: https://github.com/rails/spring
46  gem 'spring'
47  gem 'spring-watcher-listen', '~> 2.0.0'
48end
49
50group :test do
51  # Adds support for Capybara system testing and selenium driver
52  gem 'capybara', '>= 2.15'
53  gem 'selenium-webdriver'
54  # Easy installation and use of web drivers to run system tests with browsers
55  gem 'webdrivers'
56end
57
58group :production do
59  gem 'pg', '1.1.4'
60end
61
62# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
63gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
64
65

行動規範の内容に同意します

回答1件

ベストアンサー

Gemfile を次のように編集します

diff
1source 'https://rubygems.org'
2git_source(:github) { |repo| "https://github.com/#{repo}.git" }
3
4ruby '2.6.3'
5
6# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
7gem 'rails', '~> 6.0.3'
8- # Use sqlite3 as the database for Active Record
9- gem 'sqlite3', '~> 1.4'
10# Use Puma as the app server
11gem 'puma', '~> 3.11'
12# Use SCSS for stylesheets
13gem 'sass-rails', '~> 5'
14# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
15gem 'webpacker', '~> 4.0'
16# Turbolinks makes navigating your web application faster.
17# Read more: https://github.com/turbolinks/turbolinks
18gem 'turbolinks', '~> 5'
19# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
20gem 'jbuilder', '~> 2.7'
21# Use Redis adapter to run Action Cable in production
22# gem 'redis', '~> 4.0'
23# Use Active Model has_secure_password
24# gem 'bcrypt', '~> 3.1.7'
25
26# Use Active Storage variant
27# gem 'image_processing', '~> 1.2'
28
29# Reduces boot times through caching; required in config/boot.rb
30gem 'bootsnap', '>= 1.4.2', require: false
31
32group :development, :test do
33  # Call 'byebug' anywhere in the code to stop execution and get a
34  # debugger console
35  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
36+  # Use sqlite3 as the database for Active Record
37+  gem 'sqlite3', '~> 1.4'
38end
39
40group :development do
41  # Access an interactive console on exception pages or by calling 'console'
42  # anywhere in the code.
43  gem 'web-console', '>= 3.3.0'
44  gem 'listen', '>= 3.0.5', '< 3.2'
45  # Spring speeds up development by keeping your application running in the
46  # background. Read more: https://github.com/rails/spring
47  gem 'spring'
48  gem 'spring-watcher-listen', '~> 2.0.0'
49end
50
51group :test do
52  # Adds support for Capybara system testing and selenium driver
53  gem 'capybara', '>= 2.15'
54  gem 'selenium-webdriver'
55  # Easy installation and use of web drivers to run system tests with browsers
56  gem 'webdrivers'
57end
58
59group :production do
60  gem 'pg', '1.1.4'
61end
62
63# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
64gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]