when I open new windwo usig url parameter my application is crash

`var row = Titanium.UI.createTableViewRow({ title : item, mimeType : item.mimeType }); table.appendRow(row); var comment = Ti.UI.createButton({

                            right : "20dp",
                            backgroundImage : "/images/commentIcon.png",
                            width : "35dp",
                            height : "35dp"
                        });

                        row.add(comment);

                        comment.addEventListener('click', function() {
                            var neWin = Ti.UI.createWindow({
                                backgroundColor : 'white',
                                barColor : 'black',
                                url : 'commentWin.js',
                            });
                            neWin.open({
                                modal:true
                            });
                        }); `