thingworx composer weather error using wunderground

I am a beginner developer who is learning through video lectures provided by tingworx.

I have problem....ㅠㅠ

In video lecture, we use yahoo to show the weather according to the location through gauage

It was a video lecture using yahoo api but it did not work well and I used wunderground

make thing, thing template, mash up..

The cause is that the services of thing template seems to be a problem

thing template - services - script

var apiKey = "c877000237f6f6a6";


var temperature;

var humidity;

var LocationIn; 

//Inputted location needs to be valid lat, long: 40.7127, 74.0059
if(LocationIn != null){
    var test = LocationIn + "40.7127, 74.0059 ";
    var arrayLocations = test.split(",");
    var lat = arrayLocations[0];
    var long = arrayLocations[1];

    var prm = {
        url: "http://api.wunderground.com/api/"+apiKey+"/conditions/q/"+lat+","+long+".json",
        timeout: 60
    };

    var json = Resources["ContentLoaderFunctions"].PostJSON(prm);
             
    try {
        temperature = parseInt(json.current_observation.temp_f);
        humidity = parseInt(json.current_observation.relative_humidity);
   
        me.Temperature = temperature;
        me.Humidity = humidity;
        result = "Success. Properties are updated.";
    } catch(err) {
        logger.error("Could not parse temperature and humidity for location: " + LocationIn
           + ". All valid Longitudes and Latitudes values must have decimal points"                      + " and be located where weather measurements are commonly taken (near cities).");
        result = "Failed. Check Script Logs";
    }
}

and base type : infotable

error message is "Unable To Convert From org.mozilla.javascript.UniqueTag to INFOTABLE"

what problem? Temperature and humidity of the gauge do not react

help me please