Ajax call showing data in console.log but not returning data

I’m trying to work on a simple Ajax call and I’m unable to figure out what’s gone wrong. The ajax call is successful but nothing is returning. When I console.log(response), it displays the JSON in my console though. I’m using fullcalendar library and Ajax call not returning a response to the events object

Following is my action function written in functions.php file

function get_order_events() { 
$args = array( 
        'status' => array('processing', 'completed', 'on-hold'), 
        'orderby' => 'date',
        'limit' => -1, 
        'type' => 'shop_order', );
 $customer_orders = wc_get_orders($args); $events = array(); foreach ($customer_orders as $order) 
{ 
   foreach ($order->get_items() as $item_id => $item_values) { 
        $product_id =$item_values['product_id'];        
        // Get start and end dates from post meta
        $start_date = wc_get_order_item_meta($item_id, 'Check-in', true);
        $end_date = wc_get_order_item_meta($item_id, 'Checkout', true);

        // Add event to the array
        $events[] = array(
            'title' => get_the_title($product_id).' : Booked',
            'start' => $start_date,
            'end' => $end_date,
        );
    } 
}
// echo json_encode($events);
wp_send_json_success($events);
wp_die();
// return json_encode($events);
}

add_action('wp_ajax_get_order_events', 'get_order_events'); add_action('wp_ajax_nopriv_get_order_events', 'get_order_events');

Following is my js code

    var link = admin_object.ajax_url;    
    $("#calendar").fullCalendar({
        initialView: 'dayGridMonth',
        height: 650,
        events: function (_info, successCallback, failureCallback) {
            jQuery.ajax({
                url: link,
                type: 'POST', // Use POST method

                dataType: 'json',
                data: {
                    action: 'get_order_events'
                },
                success: function (response) {
                    console.log(response.data);
                    successCallback(response.data);
                    // $('#output').html(response.data);
                },
                error: function (error) {
                    console.log("Error");
                    failureCallback(error);
                }
            });
        }
    });