Wordpress bookly plugin not loading

I am getting an error when I put [bookly-form category_id="1" service_id="2" staff_member_id="1"] into a wordpress page the error I get is the following.

Uncaught TypeError: window.bookly is not a function

 (window, function() {
            window.bookly({
                is_finished    : 0,
                is_cancelled   : 0,
                ajaxurl        : "http:\/\/peterzapfella.com\/wp-admin\/admin-ajax.php",
                attributes     : {"hide_categories":false,"category_id":"1","hide_services":"1","service_id":false,"hide_staff_members":false,"staff_member_id":false,"hide_date_and_time":false,"show_number_of_persons":"1"},
                form_id        : "5614d831a4b11",
                start_of_week  : 1,
                date_min       : 0,
                final_step_url : "",
                custom_fields  : [{"type":"textarea","label":"Notes","required":false,"id":1}],
                day_one_column : 1,
                show_calendar  : 1,
                woocommerce    : 0,
                woocommerce_cart_url : ""        });
        });

via Chebli Mohamed