ChatterBot Django - no conversations / empty response

[kw005]

I am new to ChatterBot and Django. I installed everything, got the basic example running with a chat response. I followed the docs with Django, the server is up and running at: http://127.0.0.1:8000/

curl --header "Content-Type: application/json" \
  --request POST \
  --data '{"text": "Hello, how are you?"}' \
  http://127.0.0.1:8000/api/chatterbot

I always get no response. The bot is not "entering" any kind of conversation.

{"id": null, "text": "Hello, how are you?", "search_text": "", "conversation": "", "persona": "bot:Django ChatterBot Example", "tags": [], "in_response_to": "Hello, how are you?", "search_in_response_to": "", "created_at": "2021-09-09T21:00:04.444Z"}

Am I missing something, e.g. training the example in the documentation?