Rasa stops predicting next actions

Hi,

I tried building a simple rasa chatbot in rasa 3.x. But rasa stops prediction for some of the story and shows action_default_fallback. The slots are also set correctly and story is also written in desired format. I also tried tweaking the values of max_history parameter in config.yml, but still there is no luck.

For ex, its not predicting next action and predicts action_default_fallback when cash_refund_for_voucher intent has been identified for this storyline:

- story: Greet path
  steps:
  - intent: greet
  - action: utter_greet_with_ask_booking_id

- story: Cancelled booking path
  steps:
  - intent: user_booking_id
    entities:
    - invoice_no: 1DU8APU3
  - action: action_check_booking_status
  - slot_was_set:
    - booking_status: Cancelled Booking
  - action: utter_cancelled_booking_issue_categories

- story: Cash refund for voucher path
  steps:
  - intent: cash_refund_for_voucher
  - action: utter_cash_refund_for_voucher

utter_cancelled_booking_issue_categories has one option which has cash_refund_for_voucher as intent.

Kindly provide your help.

I have attached my nlu.yml, config.yml and stories.yml file.

nlu.yml (5.5 KB) stories.yml (4.5 KB) config.yml (1.5 KB)

Hello team,

Can anyone please respond? I’m not able to identify the issue.