```ruby
require 'jquery-rails'
require 'bootstrap'
require 'haml-rails'

require "twitter/bootstrap/components/rails/engine"

module Twitter
  module Bootstrap
    module Components
      module Rails
        # Your code goes here...
      end
    end
  end
end
```

Remove hard bootstrap 4 require.
user
```ruby
require 'jquery-rails'
require 'haml-rails'

require "twitter/bootstrap/components/rails/engine"

module Twitter
  module Bootstrap
    module Components
      module Rails
        # Your code goes here...
      end
    end
  end
end
```
assistant