Rasa and Rocketchat - Error in actions

Rasa Open Source
1

Hello, i’m trying connect my bot with rocketchat, but when i call it in chat, i had this response, from my server

2018-09-04 10:42:17 ERROR    rasa_core.processor  - Encountered an exception while running action 'utter_say_hello'. Bot will continue, but the actions events are lost. Make sure to fix the exception in your custom code.
2018-09-04 10:42:17 ERROR    rasa_core.processor  - roomId or channel required

Someone can help me? Thanks…

domain.yml

intents:
  - say_hello
  - say_yes
  - say_bye
  - say_no

templates:
  utter_say_hello:
  - text: "hello"

  utter_say_bye:
  - text: "bye :p"

actions:
  - utter_say_hello
  - utter_say_bye_despedida
  - custom_action_hello

stories.md

## story
* say_hello
    - utter_say_hello
* say_bye
    - utter_say_bye
    - export
2

Could you post some more logs for this? What comes before/after