jquery.min.js?v=2.0.2020713.0628PM:2 Uncaught TypeError: Illegal invocation code example

Example: jquery-3.4.1.min.js:2 Uncaught (in promise) TypeError: Illegal invocation

var form = $('#AddPersonnelForm')[0];
var frmData = new FormData(form);



processData: false,
contentType: false,