handleEvents crash Error handling message

[AnChiChang]

My class define:

@ParseClassName("Chat")
public class Chat extends ParseObject {

    private Boolean togroupbuy;
    private ParseObject products;
    private ParseUser user;
    private String chatid;
    private String content;

    public Chat() {

    }


    public Boolean getTogroupbuy() {
        return togroupbuy;
    }

    public void setTogroupbuy(Boolean togroupbuy) {
        this.togroupbuy = togroupbuy;
    }

   ..
}

and my subscription program
ParseLiveQueryClient parseLiveQueryClient = ParseLiveQueryClient.Factory.getClient();

    ParseQuery<Chat> parseQuery = new ParseQuery("Chat");

    SubscriptionHandling<Chat> subscriptionHandling = parseLiveQueryClient.subscribe(parseQuery);

    subscriptionHandling.handleEvents(new SubscriptionHandling.HandleEventsCallback<Chat>() {
        @Override
        public void onEvents(ParseQuery<Chat> query, SubscriptionHandling.Event event, Chat object) {
            Log.d("test", "live query is live");
        }
    });

after change the data via Dashboard, then app will get exception like below:
tw.com.readycom.livequery E/ParseLiveQueryClient: Error handling message
java.lang.ClassCastException: com.parse.ParseObject cannot be cast to tw.com.readycom.livequery.Chat
at tw.com.readycom.livequery.MainActivity$2.onEvents(MainActivity.java:69)
at com.parse.Subscription.didReceive(Subscription.java:80)
at com.parse.ParseLiveQueryClientImpl.handleObjectEvent(ParseLiveQueryClientImpl.java:325)
at com.parse.ParseLiveQueryClientImpl.parseMessage(ParseLiveQueryClientImpl.java:255)
at com.parse.ParseLiveQueryClientImpl.access$000(ParseLiveQueryClientImpl.java:24)
at com.parse.ParseLiveQueryClientImpl$1.call(ParseLiveQueryClientImpl.java:203)
at com.parse.ParseLiveQueryClientImpl$1.call(ParseLiveQueryClientImpl.java:201)
at bolts.Task$4.run(Task.java:357)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)

[AnChiChang]

after replace Chat to ParseObject, the problem is fine for get event. Thanks