Django - Async Django
Identify the error in this consumer code snippet:
```python
class ChatConsumer(AsyncWebsocketConsumer):
async def connect(self):
self.room_group_name = 'chat_room'
await self.channel_layer.group_add(self.room_group_name, self.channel_name)
await self.accept()
async def disconnect(self, close_code):
await self.channel_layer.group_discard(self.room_group_name, self.channel_name)
```