Railsでメール送信ができません．(Deviseのパスワードリセット)

前提・実現したいこと

Ruby on Rails 6で予約システムを作っています．
Deviseのパスワードリセット機能を利用したい
LINEでのOmniAuthで認証して，Deviseでページの管理

発生している問題・エラーメッセージ

DeviseのPasswordリセットフォームで送信すると

このようなエラーが発生してしまします．

Completed 500 Internal Server Error in 30184ms (ActiveRecord: 2.5ms | Allocations: 25455)


  
Net::OpenTimeout (execution expired):

多分，メールの設定がミスっているという気がするのですが，検討が付きません．

該当のソースコード

config/environments/development.rb

ruby
1require "active_support/core_ext/integer/time"
2
3Rails.application.configure do
4  # Settings specified here will take precedence over those in config/application.rb.
5
6  # In the development environment your application's code is reloaded any time
7  # it changes. This slows down response time but is perfect for development
8  # since you don't have to restart the web server when you make code changes.
9  config.cache_classes = false
10
11  # Do not eager load code on boot.
12  config.eager_load = false
13
14  # Show full error reports.
15  config.consider_all_requests_local = true
16
17  # Enable/disable caching. By default caching is disabled.
18  # Run rails dev:cache to toggle caching.
19  if Rails.root.join('tmp', 'caching-dev.txt').exist?
20    config.action_controller.perform_caching = true
21    config.action_controller.enable_fragment_cache_logging = true
22
23    config.cache_store = :memory_store
24    config.public_file_server.headers = {
25      'Cache-Control' => "public, max-age=#{2.days.to_i}"
26    }
27  else
28    config.action_controller.perform_caching = false
29
30    config.cache_store = :null_store
31  end
32
33  # Store uploaded files on the local file system (see config/storage.yml for options).
34  config.active_storage.service = :local
35
36  # Don't care if the mailer can't send.
37  config.action_mailer.raise_delivery_errors = true
38
39  config.action_mailer.perform_caching = true
40
41  # Print deprecation notices to the Rails logger.
42  config.active_support.deprecation = :log
43
44  # Raise exceptions for disallowed deprecations.
45  config.active_support.disallowed_deprecation = :raise
46
47  # Tell Active Support which deprecation messages to disallow.
48  config.active_support.disallowed_deprecation_warnings = []
49
50  # Raise an error on page load if there are pending migrations.
51  config.active_record.migration_error = :page_load
52
53  # Highlight code that triggered database queries in logs.
54  config.active_record.verbose_query_logs = true
55
56  # Debug mode disables concatenation and preprocessing of assets.
57  # This option may cause significant delays in view rendering with a large
58  # number of complex assets.
59  config.assets.debug = true
60
61  # Suppress logger output for asset requests.
62  config.assets.quiet = true
63
64  # Raises error for missing translations.
65  # config.i18n.raise_on_missing_translations = true
66
67  # Annotate rendered view with file names.
68  # config.action_view.annotate_rendered_view_with_filenames = true
69
70  # Use an evented file watcher to asynchronously detect changes in source code,
71  # routes, locales, etc. This feature depends on the listen gem.
72  config.file_watcher = ActiveSupport::EventedFileUpdateChecker
73  config.action_mailer.default_url_options = { protocol: 'https', host: 'localhost', port: 3000 }
74  config.action_mailer.delivery_method = :smtp
75  config.action_mailer.smtp_settings = {
76    :enable_starttls_auto => true,
77    :address => "smtp.gmail.com",
78    :port => 587,
79    :domain => 'smtp.gmail.com',
80    :user_name => ENV['GOOGLE_MAIL_ADDRESS'],
81    :password => ENV['GOOGLE_MAILER_PASSWORD'],
82    :authentication => :plain
83  }
84
85  # Uncomment if you wish to allow Action Cable access from any origin.
86  config.action_cable.disable_request_forgery_protection = true
87end
88