"Range: Any" is unrecognized when running "make test"

[Enro]

Dear LinkML cookiecutter developers, thank you for this great tool. I am currently building my data model with LinkML v1.9.3 on MacOS Sequoia 15.5 and I am running into an issue with the "any_of" construct.

After much fighting, I settled on this syntax:

slots:
  pi_age:
    range: Any
    any_of: 
      - range: AgeRange
      - range: AgeValue
    description: Age or age range of the principal investigator.

where AgeRange and AgeValue are defined as types.

Please note that range: Any is a recommendation as per https://linkml.io/linkml/schemas/advanced.html Without this, any_of would not work (only the first range would be considered).

However, when running make test, I get the following error message.

(...)
ValueError: File "grant_applications_data.yaml", line 67, col 12 slot: pi_age - unrecognized range (Any)
(...)

So it seems that Range: Any is not valid? Did I do something wrong or is the documentation lagging behind the software? And finally, how can I obtain the result that I am trying to obtain with any_of?

Any help would be much appreciated, thank you in advance.