A problem occured: a worker with ID 4741 doesn't` exist

Vladyslava

Hi everyone,

After creating an experiment which consist of 3 html files ('intro', 'list 1' & 'list 2', where 'intro' is the file that controls a random, but sequential selection of either the 'list 1' or 'list 2' per each click on the link), I needed to adjust my script by adding a redirect link upon completion. So, I changed function onFinishedHandler in jatos.js file a bit into this:

function onFinishedHandler(data, sessionData) {

// Close JSON data array

send(JSON.stringify(sessionData) + ']');

if (abortedByUser) {

jatos.endStudy(false, 'Experiment aborted by user');

} else if (errorsOccured) {

jatos.endStudy(false, 'Errors occurred during the experiment');

} else {

var red_url = new URL("https://anketka.org/return.php?status=1");

red_url.searchParams.append('sn', jatos.urlQueryParameters.sn);

red_url.searchParams.append('ac', jatos.urlQueryParameters.ac);

jatos.endStudyAndRedirect(red_url);

}

document.getElementById('osweb_div').style.display = 'none';

After this, I added this part to the 'list 1' and the 'list 2':

jatos.onLoad(function() {

jsPsych.init({

timeline: timeline,

on_finish: function () {

var resultCSV = jsPsych.data.get().csv();

var red_url = new URL("https://anketka.org/return.php?status=1");

red_url.searchParams.append('sn', jatos.urlQueryParameters.sn);

red_url.searchParams.append('ac', jatos.urlQueryParameters.ac);

jatos.endStudyAndRedirect(red_url, resultCSV);

}

});

});

The problem is that when I import my study on Jatos, get a link for general single worker and send it to the company that has to distribute it, this error pops up once they click the link (as well as when I just copy the link in my browser):

"A problem occurred:

A worker with ID 4741 doesn't exist."

I would be very grateful for any king of help.

Best,

Vlada

Vladyslava

But, it works perfectly with a link for general multiple worker.

elisa

Hi Vlada,

This will not really solve your problem, but I have two comments:

• If you need to distribute the link, why not use a general multiple worker?
• You don't usually need to go in and modify the jatos.js library. There's a function to redirect to an external link after your study ends: http://www.jatos.org/jatos.js-Reference.html#jatosendstudyandredirect

If you still need to use a general single worker, we'll figure out your problem.

Best

kri

Hi Vlada,

About the error you have: "A worker with ID 4741 doesn't exist.". Did you activate General Single Workers in the Batch in which you are running your study? By default they are deactivated.

Best,

Kristian