Rspecで書いてるlog_in_asのテストエラー

前提・実現したいこと

rails tutorial 9章を真似たlog_in_asのテストをRspecで書いていたのですが、以下のエラーが発生しました。ネットでかなり調べたのですが、色々試したものの解決しなかったので質問させていただきます。

発生している問題・エラーメッセージ


 1) UsersLogin 登録情報 チェックすると、Cookieが記憶される
    Failure/Error: log_in_as(@user,remember_me: '1')
    
    NoMethodError:
      undefined method `log_in_as' for #<RSpec::ExampleGroups::UsersLogin::Nested:0x000055b9e764ee88>
      Did you mean?  login_path
    # ./spec/features/users_login_spec.rb:29:in `block (3 levels) in <main>'

 2) UsersLogin 登録情報 チェックしない場合、Cookieを記憶しない
    Failure/Error: log_in_as(@user,remember_me: '0')
    
    NoMethodError:
      undefined method `log_in_as' for #<RSpec::ExampleGroups::UsersLogin::Nested:0x000055b9e6ff7b70>
      Did you mean?  login_path
    # ./spec/features/users_login_spec.rb:33:in `block (3 levels) in <main>'

ソースコード

/spec/support/test_helper.rb

ENV['RAILS_ENV'] ||= 'test'
require_relative '../config/environment'
require 'rails/test_help'

class ActiveSupport::TestCase
  # Run tests in parallel with specified workers
  parallelize(workers: :number_of_processors)

  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
  fixtures :all

  # Add more helper methods to be used by all tests here...
  
  def is_logged_in?
    !session[:user_id].nil?
  end
  
  def log_in_as(user)
    session[:user_id] = user.id
  end

   def log_in_as(user)
    visit login_path
    fill_in 'メールアドレス', with: user.email
    fill_in 'パスワード', with: user.password
    click_button 'ログイン'
    end
    
  end

/spec/features/users_login_spec.rb

require 'rails_helper'

RSpec.feature "UsersLogin", type: :feature do

  before do
      @user = FactoryBot.create(:user)
  end

  ...
    
      describe '登録情報' do
    it "チェックすると、Cookieが記憶される" do
     log_in_as(@user,remember_me: '1')
      expect(cookies[:remember_token]).not_to eq nil
    end
    it "チェックしない場合、Cookieを記憶しない" do
      log_in_as(@user,remember_me: '0')
      expect(cookies[:remember_token]).to eq nil
    end
  end
    
    
  end

/spec/rails_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../config/environment', __dir__)
# Prevent database truncation if the environment is production
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'
# Add additional requires below this line. Rails is not loaded until this point!

# Requires supporting ruby files with custom matchers and macros, etc, in
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
# run as spec files by default. This means that files in spec/support that end
# in _spec.rb will both be required and run as specs, causing the specs to be
# run twice. It is recommended that you do not name files matching this glob to
# end with _spec.rb. You can configure this pattern with the --pattern
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
#
# The following line is provided for convenience purposes. It has the downside
# of increasing the boot-up time by auto-requiring all files in the support
# directory. Alternatively, in the individual `*_spec.rb` files, manually
# require only the support files necessary.
#
# Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }

# Checks for pending migrations and applies them before tests are run.
# If you are not using ActiveRecord, you can remove these lines.
begin
  ActiveRecord::Migration.maintain_test_schema!
rescue ActiveRecord::PendingMigrationError => e
  puts e.to_s.strip
  exit 1
end
RSpec.configure do |config|
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"

  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  # You can uncomment this line to turn off ActiveRecord support entirely.
  # config.use_active_record = false

  # RSpec Rails can automatically mix in different behaviours to your tests
  # based on their file location, for example enabling you to call `get` and
  # `post` in specs under `spec/controllers`.
  #
  # You can disable this behaviour by removing the line below, and instead
  # explicitly tag your specs with their type, e.g.:
  #
  #     RSpec.describe UsersController, type: :controller do
  #       # ...
  #     end
  #
  # The different available types are documented in the features, such as in
  # https://relishapp.com/rspec/rspec-rails/docs
  config.infer_spec_type_from_file_location!

  # Filter lines from Rails gems in backtraces.
  config.filter_rails_from_backtrace!
  # arbitrary gems may also be filtered via:
  # config.filter_gems_from_backtrace("gem name")
  
  Shoulda::Matchers.configure do |config|
   config.integrate do |with|
    with.test_framework :rspec
    with.library :rails
  end
end
end

試したこと

Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }をコメントインしてみましたが、別のエラーが出てしまいます。

補足情報（FW/ツールのバージョンなど）

ちなみに試したことの部分を実行すると下のエラーが出ます。

An error occurred while loading rails_helper.
Failure/Error: require_relative '../config/environment'

LoadError:
  cannot load such file -- /home/ubuntu/environment/アプリ名/spec/config/environment

ここにより詳細な情報を記載してください。