code: def _get_error_message(self, response):
          
  
          error_message = 'An error occurred processing your request.'
          try:
              content = response.json()
              # {"errors":[{"code":34,"message":"Sorry,
              # that page does not exist"}]}
              error_message = content['errors'][0]['message']
          except TypeError:
              error_message = content['errors']
          except ValueError:
              # bad json data from Twitter for an error
              pass
          except (KeyError, IndexError):
              # missing data so fallback to default message
              pass
  
          return error_message
docs: Parse and return the first error message