```ruby
require 'sinatra/base'
require 'easy_breadcrumbs/version'
require 'easy_breadcrumbs/breadcrumb'

module Sinatra
  include ::EasyBreadcrumbs

  module EasyBreadcrumbs
    Breadcrumb = ::EasyBreadcrumbs::Breadcrumb

    def easy_breadcrumbs
      # Path from current Rack::Request object
      request_path = request.path

      # All GET request routes
      route_matchers = Sinatra::Application.routes['GET'].map { |route| route[0] }

      # The rest is handled by Breadcrumb class
      breadcrumb = Breadcrumb.new(request_path, route_matchers)
      breadcrumb.to_html
    end
  end

  # Register helper with Sinatra::Application
  helpers EasyBreadcrumbs
end
```

Fix issue for modular style applications by accessing sinatra routes through self.class rather than Sinatra::Application.
user
```ruby
require 'sinatra/base'
require 'easy_breadcrumbs/version'
require 'easy_breadcrumbs/breadcrumb'

module Sinatra
  include ::EasyBreadcrumbs

  module EasyBreadcrumbs
    Breadcrumb = ::EasyBreadcrumbs::Breadcrumb

    def easy_breadcrumbs
      # Path from current Rack::Request object
      request_path = request.path

      # All GET request routes
      route_matchers = self.class.routes['GET'].map { |route| route[0] }

      # The rest is handled by Breadcrumb class
      breadcrumb = Breadcrumb.new(request_path, route_matchers)
      breadcrumb.to_html
    end
  end

  # Register helper with Sinatra::Application
  helpers EasyBreadcrumbs
end
```
assistant