fix bug

modules/mogo-module-service/src/main/java/com/mogo/module/service/marker/MapMarkerManager.java

@@ -146,6 +146,11 @@ public class MapMarkerManager implements IMogoMarkerClickListener,
                         return WebSocketMsgType.MSG_TYPE_DOWNLINK_CAR_DATA;
                     }
 
+                    @Override
+                    public Class<MogoSnapshotSetData> target() {
+                        return MogoSnapshotSetData.class;
+                    }
+
                     @Override
                     public void onMsgReceived( MogoSnapshotSetData data ) {
                         if ( data == null ) {