Is Fullcalendar v2.6.0 able to work on jQuery-3.3.1 and MVC 5?

Is Fullcalendar v2.6.0 able to work on jQuery-3.3.1 and MVC 5? I have an old project which needs to be upgraded. I am using Visual Studio 2017 with jQuery-3.3.1, MVC 5.2.4 and moment.min.js 2.24 to recompile it, but I always got an error when I use IE 11:

Unhandled exception at line 3827, column 3 in http://localhost:61158/Scripts/jquery-3.3.1.js 0x800a138f - JavaScript runtime error: Unable to get property 'format' of undefined or null reference

When I use Google Chrome to debug it, I got an error message is:

Uncaught TypeError: Cannot read property 'format' of null

Anyone has any ideas? Thanks.

Sorry, this is my calendar code in index.cshtml.

 <script type="text/javascript">

    $(document).ready(function() {

        $('#calendar').fullCalendar({
            theme: true,
            aspectRatio: 2,
            defaultDate: '@DateTime.Now.ToString("MM-dd-yyyy")',
            editable: true,
            eventLimit: true, // allow "more" link when too many events
            events: {
                url: '@Url.Action("GetCalendarEvents")',
                error: function () {
                    $('#script-warning').show();
                }
            },
            eventClick: function (calEvent, jsEvent, view) {
                //set the values and open the modal
                //var winWidth = $(window).width();
                //var dialogWidth = winWidth * 0.5;
                var gdiv = $("#eventInfo");
                if (gdiv != null) gdiv.empty();

                $.ajaxSetup({ cache: false });

                var request = $.ajax({
                    type: "GET",
                    url:  calEvent.ajaxUrl,
                    data: {}
                });

                request.done(function (returndata) {
                    $("#eventInfo").html(returndata);

                });


                request.fail(function (jqXHR, status) {
                    alert("Error repopulating grid : " + status + "");
                });

                $.ajaxSetup({ cache: true });

            }
        });

    });

    </script>

Here's a JSFiddle using those library versions (the MVC version is irrelevant since that only affects server-side code): http://jsfiddle.net/g2np7wt9/2/

You didn't post your own code unfortunately, so I used a very basic calendar setup for the test:

$(document).ready(function() {
  $('#calendar').fullCalendar({
    header: {
      left: 'prev,next today',
      center: 'title',
      right: 'month,agendaWeek,agendaDay'
    }
  });
});

It does indeed produce the error mentioned in your question, so the short answer is no, this combination of library versions doesn't work.

So your options are

a) downgrade the version of jQuery until the problem stops (2.2.4 seems to be the last version it works with, based on some quick tests)

or (probably better)

b) upgrade your version of fullCalendar, since 2.x is legacy now. 3.x is almost 100% API-compatible with 2.x, but does work with newer jQuery. See https://fullcalendar.io/blog/2016/09/feature-packed-releases. 4.x is a much bigger change but it may be worth it in the long run, since that's where the future lies in terms of new features, bug fixes etc. Also 4.x doesn't require jQuery or momentJS, so that headache would disappear entirely... see https://fullcalendar.io/docs/upgrading-from-v3.