Failed to connect to duckling http server. Make sure the duckling server is running and the proper host and port are set in the configuration

Question

I have made workplace on slack and app is registered there from where i get the necessary things like slack token and channel to put it into the credentials.yml file of the rasa. After getting all the credentials i tried to connect between the rasa bot and slack using the command as:

rasa run

and my credentials.yml contains:

slack:

  slack_token: "xoxb-****************************************"
  slack_channel: "#ghale"

Here i have used the ngrok to expose a web server running on your local machine to the internet

but getting the error :

rasa.nlu.extractors.duckling_http_extractor - Failed to connect to duckling http server. Make sure the duckling server is running and the proper host and port are set in the configuration. More information on how to run the server can be found on github: https://github.com/facebook/duckling#quickstart Error: HTTPConnectionPool(host='localhost', port=8000): Max retries exceeded with url: /parse (Caused by NewConnectionError(': Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it',))

Answer 1

Are you using Duckling? Duckling is a rule-based component to extract entities(docs).

If you are not using it, you can remove it from your NLU pipeline. If you want to use it, the easiest way to do so is using docker:

docker run -p 8000:8000 rasa/duckling

The command above will run duckling and expose it on port 8000 of your host.