uploadAttachment return null object

[User673228]

Hi. I have this script : 

$scope.attachFile = function(files, $event) {
  var e = $event.currentTarget;
  console.dir("value e : " + e.value);
  if (e) {
    e.value = '';
  }
  console.log("files[0]");
  console.dir(files[0]);
		
  console.log("snAttachmentHandler before");
  console.dir(snAttachmentHandler);
	
  var sna = snAttachmentHandler.create('myUserTable', $scope.data.elementSysId);

  console.log("snAttachmentHandler after");
  console.dir(sna);

  sna.uploadAttachment(files[0]).then(function (response) {

  console.log("sna.uploadAttachment");
  console.dir(sna);
			 
  console.log("response");
  console.dir(response);
			 
     var fName = response.file_name;

     console.log("fname");
     console.log(fName);

     if (fName.indexOf('inp_') != 0) {
       fName = "inp_" + fName;
       snAttachmentHandler.renameAttachment(response.sys_id, fName).then(function (response) {
           var nah = $scope.attachmentHandler = new nowAttachmentHandler(setAttachments, function () { });
           nah.setParams('myUserTable', $scope.data.elementSysId, 1024 * 1024 * 24 /*24MB*/);
           function setAttachments(attachments, action) {
               $scope.attachments = attachments;
               $scope.data.attachmentList = attachments;
           }
           $scope.attachmentHandler.getAttachmentList();
       });
     }
   });
};

But i get an error, always the same : TypeError: Cannot read property 'indexOf' of undefined

I use the same script in another widget, and everythings work fine... Somebody can help?

[EDIT]

This is the console log result : 

[Nestor Paredes]

Hello,

I experienced the same error, but the cause was different:

I was reading from the attachment
The file was too big for :

GlideSysAttachment().get()

I had to use this instead:

// Now we need to read the file
    // we need to do this because of its size, otherwise it would crash and return null
    var attachSysID = grAttachment.getUniqueValue();
    // we create an input stream based on the attachment
    var inputStream = new GlideSysAttachment().getContentStream(attachSysID);
    // and instantiate a reader
    var reader = new GlideTextReader(inputStream);
    var ln = ' ';
    // this will have all the lines for the soon-to-be json
    var dataInTextFile;
    // adding in the lines
    while ((ln = reader.readLine()) != null) {
        dataInTextFile += ln;
    }

I got the idea from here:

https://www.servicenow.com/community/developer-forum/how-can-i-read-from-a-very-large-attachment/td-...

Regards,

N.