Auto_fill doesn't set to false in rasa 3. x

I have tried to set auto_fill to false to prevent rasa from automatically filling the slots with entities, but it doesn’t work. Here is a snippet from the domain.yml file: entities:

  • food
  • phone_number
  • food_size
  • send_signal

slots: food: type: text influence_conversation: true mappings: - type: from_entity entity: food phone_number: type: text influence_conversation: true mappings: - type: from_entity entity: phone_number food_size: type: text influence_conversation: true mappings: - type: from_entity auto_fill: false entity: food_size signal: type: text influence_conversation: true mappings: - type: from_entity entity: send_signal