This is a script to export the tickertape screener results in a CSV format.

tickertape-report-exporter.js

const scrapeData = () => {

  const sections = document.querySelectorAll("#screener-table > section");
  const headingElements = sections[0].querySelectorAll("div[id]");

  const scrapedData = Array.from(headingElements).map(elm => {
    const selector = elm.getAttribute("id") === "name" ? "stock-name-col" : elm.getAttribute("id") + "-col";
    const rowElements = sections[1].querySelectorAll("." + selector + " .desktop--only")
    return {
      column: elm.querySelector(".data-cell .desktop--only").textContent,
      rows: Array.from(rowElements).map(el => el.textContent)
    }

  });
  return scrapedData;

}

const generateCSVData = scrapedData => {

  const count = scrapedData[0].rows.length;

  // generate structured data
  const csvData = Array.from({
    length: count
  }, (_, rowIndex) => {
    var obj = {};
    scrapedData.forEach(data => {
      obj[data.column] = `"${data.rows[rowIndex]}"`
    })
    return obj;

  });



  const headers = Object.keys(csvData[0]).toString();
  // Get and stringify the keys of the first object in the array

  const main = csvData.map(item => Object.values(item).toString());
  // Map finally returns array of arrays of values in each object

  const csv = [headers, ...main].join('\n');
  // Creates new array, where first row is keys and further rows the values in each object

  return csv;
}

const downloadFile = csvData => {
  const anchor = document.createElement('a');
  anchor.href = 'data:text/csv;charset=utf-8,' + encodeURI(csvData);
  anchor.target = '_blank';
  anchor.download = `${document.title}`;
  anchor.click();
}

downloadFile(generateCSVData(scrapeData()));

Hi earlier this code used to work, now getting below error, can you please let me know how to reslove (Note- I have non IT background)= Error- VM157:4 Uncaught TypeError: Cannot read properties of undefined (reading 'querySelectorAll')
at scrapeData (:4:39)
at :57:30