I have a function (addEmailsOfStudentsToBCC(e)) which fetches e-mail adresses from a Google sheet pending on the choices of the user on a formInput (select). If gets the e-mailadress of each selected student, pushes in a array and in the end the array gets pushed to the BCC of a draft e-mail.

Everything works like a sharm on the Gmail app on my laptop. When opening the same add-on with the same function on my mobile device (in Gmail-app)… It throws an Type errror:
TypeError: Cannot read properties of undefined (reading 'forEach') at addEmailsOfStudentsToBCC(Main:174:16)

Logs also show that e['formInputs']['studentPicker'] is null on the mobile device but it returns an array with the chosen selection on a laptop.

The crazy thing is i have another function where teacher can select classes which use a similar way of working (e['formInputs'['classPicker'])
and that one works on laptop and mobile.

function addEmailsOfStudentsToBCC(e) {
  let studentsToMail = e['formInputs']['studentPicker']
  let toRecipients = []



studentsToMail.forEach((e) => {
    var listOfEmails = getMaillistFromClass(e)
    toRecipients.push(listOfEmails)
  })

  


 var response = CardService.newUpdateDraftActionResponseBuilder().setUpdateDraftBccRecipientsAction
    (CardService.newUpdateDraftBccRecipientsAction()
      .addUpdateBccRecipients(toRecipients))
    .build();
  return response;

 

}

I tried to check the logs but i’m kind of hopeless at the moment