I don't know if this is a LinkML error or something specific to the CRDC-H model, so I will cross post an issue in linkml/linkml
Run make all from this branch issue-27-codable-concept-notebooks in the example-data repo
make all clears and recreates the somewhat top-heavy piping virtual environment used elsewhere in this repo, so that could take a few minutes.
See gen_diag_with_stage_obs_set.py for the code that creates the problematic YAML data file.