jatos.endStudy triggers on_close function (jsPsych.init)

[EceKayaMPI]

Hi,
In my experiment, I have both on_close functions to catch data if participant decides to close the tab, and on_finish function to make sure they finished the experiment and get data. However, after the on_finish function is triggered, on_close function also gets triggered, and tries to upload the 'closed data' file. I think it happens at "jatos.endStudyAjax()" but I used that lines before and it didn't do it then. I also need to use these lines.

How can I get them triggered separately?

      jsPsych.init({
        timeline: timeVar,
        default_iti: 550,
        use_webaudio: true,
        on_close: function() {
          console.log('experiment closed');

          var filename_base_c = 'OP_';
          var filename_ptnr_c = participant_info.pt_nr;
          var filename_c = filename_base_c.concat(filename_ptnr_c.toString(), '_cls.csv');

          var resultCSV_c = jsPsych.data.get().csv();
          jatos.uploadResultFile(resultCSV_c, filename_c);

          var comp_pro_id = participant_info.pro_ID;
          jatos.submitResultData(comp_pro_id);

          event.preventDefault();
          event.returnValue = '';
        },

        on_finish: function() {
          console.log('experiment finished');

          var filename_base = 'OP_';
          var filename_ptnr = participant_info.pt_nr;
          var filename = filename_base.concat(filename_ptnr.toString(), '_fin.csv');

          var resultCSV = jsPsych.data.get().csv();
          jatos.uploadResultFile(resultCSV, filename);

          var interaction_data = jsPsych.data.getInteractionData();
          interacfilename = filename_base.concat(filename_ptnr.toString(), '_int.csv');
          jatos.uploadResultFile(interaction_data, interacfilename);

          var comp_pro_id = participant_info.pro_ID;
          jatos.submitResultData(comp_pro_id);

          jatos.endStudyAjax().then(() => {
          // Change this URL to the one you see in Prolific
          window.location.href = 'https://app.prolific.co/submissions/complete?cc=8ABFD51D'
          });

        },
      })

Thanks in advance,
Ece