Rubillow: Error connecting to remote service

I'm working with a rails application. I am using ruby gem rubillow to fetch the US property information. Its working fine on my local but giving error of "Error connecting to remote service". Below is my code:

Rubillow.configure do |configuration| configuration.zwsid = "X1-ZWz1fd7h4ozw23_2hwdv" end property = Rubillow::HomeValuation.search_results({ :address => '2114 Bigelow Ave', :citystatezip => 'Seattle, WA' })