var userMail = e.user.getEmail(); on edit google sheets not pulling email - google-apps-script

Question

I was using the following script on a google sheet that worked for months, but now around 1:30 PM Thursday 3/5/2020 it stopped working and pulling the user emails. I tried changing it to the second attempt, saved, and edited the cell, but nothing happened.
(Note: I cannot share the file due to regulations.)
What was working before:
function onEdit(e) {
var rg = e.range;
if (rg.getSheet().getName() == "Call Log" && rg.columnStart == 13) {
var nextCell = rg.offset(0, -3);
if (nextCell.getValue() == '') {
var userMail = e.user.getEmail();
nextCell.setValue(userMail);
}
}
}
My second attempt:
function onEdit(e) {
var rg = e.range;
if (rg.getSheet().getName() == "Call Log" && rg.columnStart == 24) {
var nextCell = rg.offset(0, 3);
if (nextCell.getValue() == '') {
var email = Session.getActiveUser().getEmail();
Logger.log(email);
nextCell.setValue(userMail);
}
}
}

Answer 1

onEdit Event Object clearly states the following:
If security policies do not allow access to the user's identity, User.getEmail() returns a blank string. The circumstances in which the email address is available vary: for example, the user's email address is not available in any context that allows a script to run without that user's authorization, like a simple onOpen(e) or onEdit(e) trigger, a custom function in Google Sheets, or a web app deployed to "execute as me" (that is, authorized by the developer instead of the user). However, these restrictions generally do not apply if the developer runs the script themselves or belongs to the same G Suite domain as the user.

Answer 2

Lara,
Honestly, I've never worked with google sheet functions. But it looks like their API is pretty straightforward. Based on the error
TypeError: Cannot read property 'range' of undefined (line 2, file
"Code")
I can assume that your function doesn't consume any values. You should retrieve the range from another object. I found this article very good to start with. It looks like you first have to get your sheet using var sheet = SpreadsheetApp.getActiveSheet(); and then carefully read API documentation.
Most likely you will end up with something like:
function onEdit(e) {
var sheet = SpreadsheetApp.getActiveSheet();
var range = sheet.getRange();
if (sheet.getName() === "Call Log" && range.getColumn() === 24) {
var nextCell = range.offset(0, 3);
if (nextCell.getValue() === '') {
var email = Session.getActiveUser().getEmail();
Logger.log(email);
nextCell.setValue(email);
}
}
}
But I can't test this solution. Please, give it a try or update this in the way you wish.