I have made a simple rails website and pushed to git and deployed through heroku. The only page which shows is the home page. here is the routes file.

```
Rails.application.routes.draw do
  root 'handm#home'
  get 'handm/about'
  get 'handm/contact'
  get 'handm/industries'
  get 'handm/languages'
  get 'handm/services'
end

```

what could be causing the pages "not to exist"? thanks for your help.