EXE/XML Custom sensor Screenshot with PhantomJS

Hi,

I have a problem with my Custom sensor. I have to go to the Webpage of our company and take a screenshot. But I get the following error:

XML: Structural error in xml file, 1 open items. -- JSON: Das zurückgelieferte JSON entspricht nicht der erwarteten Struktur (Invalid JSON.). (Code: PE231)

I don't exactly understand why there is an error, because an other sensor that I made almost the same way works just fine. And the second question is where does PRTG saves my Screenshots?

Here is the code that I have:

page.onResourceReceived = function(response)

{

  // Taking a screenshot

  if(response.url === ''some URL address")

  {

    page.render("Screenshot.jpg");

  };

  // Status codes

  if(response.status >= 200 && response.status < 300)

  {

    errorVar = 0;

    errorText = "OK";

  };

  if(response.status >= 300 && response.status < 400)

  {

    errorVar = 1;

    errorText = "Warning";

  };

  if(response.status >= 400 && response.status < 500)

  {

    errorVar = 2;

    errorText = "Client error";

  };

  if(response.status >= 500 && response.status < 600)

  {

    errorVar = 3;

    errorText = "Server error";

  };

  var error = errorVar; 

  var text = errorText;
  

  // Defining the channels

  object = {

    prtg: {

      error: error,

      text: text,

      result:[

        { 
          channel: "Screenshot", 
          value: 0
        }

      ]

    }

  };

  object = JSON.stringify(object)

  console.log(object)

  phantom.exit();

}

So the response.status part of the code is just to see if there is an error and if the webpage "works" or not. The channel, well, I don't actually need it, but I put it anyway. As I did this normally in the command propt (without implementing it on the PRTG), it worked just fine (but the code was different, i.e. I didn't needed the "PRTG part".

Thanks and kind regards

Benjamin

custom-sensor prtg screenshots