v143 Skript OpenFolders.uc.js funktioniert nicht mehr

// OpenFolders.uc.js
// Button with drop-down menu for opening some folders
// null - separator
(async data => CustomizableUI.createWidget({
   id: "OpenFolders",
   label: "Open Folders",
    tooltiptext: "Open Some Folders",
   localized: false,
   onCreated(btn) {
       var doc = btn.ownerDocument;
       var n = nn => doc.createXULElement(nn);

       btn.type = "menu";
       btn.setAttribute("image", this.image);

       var popup = n("menupopup"), dummy = n("menuitem");
       popup.toggleAttribute("context");
       dummy.n = n;
       dummy.render = this.render;

       popup.append(dummy);
       btn.prepend(popup);

//        var tt = btn.appendChild(n("box")).appendChild(n("tooltip"));
//        tt.setAttribute("onpopupshowing", "return !(this.btn.open = true);");
//        btn.setAttribute("tooltip", tt.id = (tt.btn = btn).id + "-tooltip");
   },
   render() {
       var {n, parentNode: popup} = this;
       this.remove();

       for(var o of data) {
           if (!o) {
               popup.append(n("menuseparator"));
               continue;
           }
           var {lab, file, img} = o;
           var menuitem = n("menuitem");

           menuitem.setAttribute("label", lab || file.leafName);
           menuitem.className = "menuitem-iconic";
           menuitem.setAttribute("image", img || "moz-icon://file:///" + file.path);
           menuitem.tooltipText = file.path;

           menuitem.file = file;
           popup.append(menuitem);
       }
       popup.setAttribute(
           "oncommand",  
           'var {file} = event.target; file.exists() ? file.reveal() : Services.prompt.alert(null, "Not found!", file.path);'
       );
   },
   get image() {
       var sym = Symbol.iterator;
       data[sym] = () => {
           delete data[sym];
           var it = data[sym](), {next} = it;
           var f = Components.Constructor("@mozilla.org/file/local;1", "nsIFile", "initWithPath");
           it.next = () => {
               var res = next.call(it), obj = res.value;
               if (obj) {
                   var {file} = obj;
                   //if (typeof file == "function") obj.file = obj.file(f);
                   if (typeof file == "string") {
                       var ind = file.indexOf("\\"), has = ind > 0;
                       var root = has ? file.slice(0, ind) : file;
                       if (root.length > 2)
                           file = Services.dirsvc.get(root, Ci.nsIFile).path
                               + (has ? file.slice(ind) : "");
                       obj.file = f(file);
                   }
               }
               return res;
           }
           return it;
       }
       delete this.image;
        return this.image = "chrome://global/skin/icons/folder.svg";
   }
}))([
        // Set your own paths here
    lab: "Drive D:",
    file: "D:\\",
    img: "chrome://browser/skin/preferences/saveFile.png"
},{
    lab: "Downloads",
    file: "D:\\DOWNLOADS",
},{
    file: "D:\\Portable Files",
},
null, {					// separator
    lab: "Core",
    file: "GreD",
    img: "chrome://branding/content/icon16.png"
},{
    file: "D:\\Portable Files\\Firefox Portable\\Profiles",
},{
    file: "D:\\Portable Files\\Firefox Portable\\Profiles\\Chrome",
}]);