Django development server showing Error 61 Connection Refused with Redis

I am trying to follow the tutorial on read the docs for Django Channels. In the settings.py file I am trying to change the inmemory BACKEND to the redis backend with the following code:

CHANNEL_LAYERS = {
    "default": {
        "BACKEND": "asgi_redis.RedisChannelLayer",
        "CONFIG": {
            "hosts": [("localhost", 6379)],
        },
        "ROUTING": "chan.routing.channel_routing",
    },
}

However, the moment I do this, the console which is running the runserver command shows the following error:

ConnectionError: Error 61 connecting to localhost:6379. Connection refused.

How can I fix this?