Pagy Issue

my-problem.rb

require "bundler/inline"

gemfile(install: true) do
  source "https://rubygems.org"

  gem "rails", "~> 6.1.0"
  gem "pagy", "5.1.2"
end

gem "actionpack"
gem "railties"

require "rails"
require "action_controller/railtie"
require "active_record"

class TestApp < Rails::Application
  config.eager_load = "development"
  config.consider_all_requests_local = true
  config.secret_key_base = "anything"
  config.secret_token = "anything"
  config.hosts = "www.example.com"

  routes.append do
    get "/" => "test#index", as: "test"
  end
end

require "pagy/extras/metadata"
require "pagy/extras/overflow"

Pagy::DEFAULT[:items] = 20
Pagy::DEFAULT[:metadata] = [:first_url, :last_url]
Pagy::DEFAULT[:overflow] = :empty_page

class Record < ActiveRecord::Base; end

class TestController < ActionController::Base
  include Pagy::Backend

  def index
    meta, records = pagy(Record.none, items: 10)

    render json: {data: [], meta: pagy_metadata(meta)}
  end
end

TestApp.initialize!

session = ActionDispatch::Integration::Session.new(Rails.application)

path = Rails.application.routes.url_helpers.test_path

session.get(path)

puts session.response.body