This Rasa issue seems to not really be described by the “Warning” (and the “Warning” in this case is effectively an error). It has this message for every slot and entity:
/rasa/shared/utils/io.py:99: UserWarning: Slot ‘name’ uses a ‘from_entity’ mapping for a non-existent entity ‘name’. Skipping slot extraction because of invalid mapping.
Of course, it’s not literally true:
From domain.yml:
slots:
name:
type: text
initial_value: null
mappings:
- type: from_entity
entity: name
From nlu.yml:
- intent: provide_name
examples: |
- My name is [John Doe](name)
- You can call me [Sara](name)
- [James](name) is my name
- they call me [Biggie Smallz](name)
- [Yun Fan](name)
I have also tried several variations and tried appending an entity list to nlu.yml:
entities:
- name
My original slots syntax was more concise (this is one of a few variations).
slots:
name:
type: text
mappings:
- type: from_entity
entity: name
I’ve tried running with debug = True, log_level: DEBUG, -vv, Python versions 3.7, 3.8, 3.9, and 3.10, as well as deleting caches. The model builds without error using rasa train. In fact, if I build the nlu component only with rasa train nlu I can run it and see that entity extraction works fine.
Additionally, when I put a debugger in the source code I see the domain_slots.items() look like this:
('name', {'type': 'text', 'initial_value': None, 'mappings': [{'type': 'from_entity', 'entity': 'name'}]}),
