[Решено] Ошибка в коде - Joomla 3.x: Общие вопросы

main.js:181 Uncaught TypeError: Cannot read property 'top' of undefined
    at HTMLDocument.<anonymous> (main.js:181)
    at u (jquery.min.js?f2e76255aa319f2f7035d68c97cd365d:2)
    at Object.fireWith [as resolveWith] (jquery.min.js?f2e76255aa319f2f7035d68c97cd365d:2)
    at Function.ready (jquery.min.js?f2e76255aa319f2f7035d68c97cd365d:2)
    at HTMLDocument._ (jquery.min.js?f2e76255aa319f2f7035d68c97cd365d:2)

        var headerHeight = fixedSection.outerHeight();
        var stickyNavTop = fixedSection.offset().top;
        fixedSection.addClass('animated');
        fixedSection.before('<div class="nav-placeholder"></div>');
        $('.nav-placeholder').height('inherit');

var stickyNavTop = fixedSection.offset()? fixedSection.offset().top : 0;