put edit response urls for google form in linked spreadsheet

assignEditUrls.gs

// install as a google script linked to the form, not the spreadsheet. must add a trigger to run assignEditUrls() on form submit.
// benefit of linking to the form is that copying the spreadsheet will copy the spreadsheet, form and script.
function assignEditUrls() {
  var form = FormApp.getActiveForm();
  var ss = SpreadsheetApp.openById(form.getDestinationId());
  var sheet = ss.getSheets()[0];

  var data = sheet.getDataRange().getValues();
  var urlCol = 2; // column number where URL's should be populated; A = 1, B = 2 etc
  var responses = form.getResponses();
  var timestamps = [], urls = [], resultUrls = [];

  for (var i = 0; i < responses.length; i++) {
    timestamps.push(responses[i].getTimestamp().setMilliseconds(0));
    urls.push('=HYPERLINK("' + responses[i].getEditResponseUrl() + '", "edit")');
  }
  for (var j = 1; j < data.length; j++) {
    resultUrls.push([data[j][0]?urls[timestamps.indexOf(data[j][0].setMilliseconds(0))]:'']);
  }
  sheet.getRange(2, urlCol, resultUrls.length).setValues(resultUrls);  
}

It's been a few years since use, but just ran it again on the old spreadsheet and worked fine - no issues. The "edit" in this line:
urls.push('=HYPERLINK("' + responses[i].getEditResponseUrl() + '", "edit")');
is just a bit of text to hyperlink. You need the = operator at the beginning to indicate it is a formula. Can you paste what you get in the hyperlink cell?

I found error in syntax of the function HYPERLINK, and the solution is turn the comma by semicolon:
(...) + ' " ; "edit")');