Confusion with Constants.linkingUri

I am using the following code

      let queryString = url.replace(Constants.linkingUri, '');
      if (queryString) {
        let data = qs.parse(queryString);
        console.log('App: ', JSON.stringify(data));
      }

Now, when I scan the QR code, I get

      App:  {"exp://192.168.1.104:19000":""}

So what to do when there is no ‘+’ sign after the URL, which seems to be the default case?