Uninitialized constant error after moving page models - selenium

Question

I am using Selenium, Capybara, and Rspec to write UI tests. Our project has lots of helpers and page models. I would like to sort out the helpers and page models that are only used in specific test groupings.
This is a sample of what our current project structure is like:
spec
- test grouping folder 1
- test 1
- test 2
- test grouping folder 2
- another test
- another test
- helpers
- helper 1
- helper 2
- page_models
- page 1
- page 2
- spec_helper.rb
This is what I am trying to implement:
spec
- test grouping folder 1
- helpers
- helper file 1
- page_models
- page model 1
- page model 2
- test 1 (spec file)
- test 2 (spec file)
- helpers (shared between multiple test groupings)
- page_models (shared between multiple test groupings)
- spec_helper.rb
I started by moving the relavent helper and page model files into test group 1's new helpers and page_models folders. Then in my spec helper I added the following:
require "./spec/test_group_1/helpers/helper_1"
Dir[File.dirname(__FILE__) + "spec/**/helpers/*.rb"].each { |f| require f }
Dir[File.dirname(__FILE__) + "spec/**/page_models/*.rb"].each { |f| require f }
When I run my tests I get this error:
Failure/Error: subject(:page) { PageModel1.new }
NameError:
uninitialized constant PageModel1
this is what the test looks like:
describe "TestGroup1", type: :feature do
describe "League CRUD" do
context "with an authorized user" do
subject(:page) { PageModel1.new }
before do
visit "my url here"
page.sign_in.click
login
end
it "creates a league" do
add_new_sb_page
create_league
expect(page).to have_content("League 1")
end
end
end
end
This is what my page_model looks like:
class PageModel1 < SitePrism::Page
element :example, "div#example"
end
Why would changing the structure cause this error? Is there a better way to structure my project?