Problems with the search field and menu elements on mobile about material-dashboard HOT 2 CLOSED

if(!mobile_menu_initialized){
            $navbar = $('nav').find('.navbar-collapse').first().clone(true);

            nav_content = '';
            mobile_menu_content = '';

            $navbar.children('ul').each(function(){

                content_buff = $(this).html();
                nav_content = nav_content + content_buff;
            });

            nav_content = '<ul class="nav nav-mobile-menu">' + nav_content + '</ul>';

            $navbar_form = $('nav').find('.navbar-form').clone(true);

            $sidebar_nav = $sidebar_wrapper.find(' > .nav');

            // insert the navbar form before the sidebar list
            $nav_content = $(nav_content);
            $nav_content.insertBefore($sidebar_nav);
            $navbar_form.insertBefore($nav_content);

            $(".sidebar-wrapper .dropdown .dropdown-menu > li > a").click(function(event) {
                event.stopPropagation();

            });

            mobile_menu_initialized = true;

        mobile_menu_initialized = true;

        // Plate mask for search field
        $('#plate-search-field').mask('SSS0000');

        // Form submit event listener and handler
        document.addEventListener('submit', eventHandler);

        function eventHandler(e) {
            e.preventDefault();
            let sourceFormId = e.srcElement.id;

            if (sourceFormId === 'plate-search-form') {
                let plate = e.target["0"].value;
                searchPlate(plate);
            }
        }