Django channel async_to_sync(channel_layer.send)('test_channel', {'type': 'hello'}) error

[Aditya Bohra]

In Python shell  as per directed on django channel site https://channels.readthedocs.io/en/latest/tutorial/part_2.html#enable-a-channel-layer

$ python3 manage.py shell
>>> import channels.layers
>>> channel_layer = channels.layers.get_channel_layer()
>>> from asgiref.sync import async_to_sync
>>> async_to_sync(channel_layer.send)('test_channel', {'type': 'hello'})
>>> async_to_sync(channel_layer.receive)('test_channel')
{'type': 'hello'}


please help