hello i have issue with js like that. Uncaught ReferenceError: SmoothlyMenu is not defined how can I fix it

$(".sicker-menu").sticky({topSpacing:0});

$('#sidebarCollapse').on('click', function () {
    $("body").toggleClass("mini-navbar");
    SmoothlyMenu();
});
$(document).on('click', '.header-right-menu .dropdown-menu', function (e) {
    e.stopPropagation();
});