YAML won't validate?

Hi Brian,

I have a fits file on the SAS in the dr19 tree at MWM_MDWARF/elemental_abundances/mdwarf_abundances-1.0.1.fits

I can generate a YAML file and fix the replace me's:
https://github.com/sdss/datamodel/blob/vac11/datamodel/products/yaml/mdwarf_abundances.yaml

But I cannot get a JSON either from datamodel_update or datamodel_generate with the following errors that I can't use to make a fix. Can you tell me what I'm doing wrong? Or perhaps a bug creeped in after the latest PR since this vac11 branch was created from main.

[u0707758@archive:products]$ datamodel_update -f mdwarf_abundances -r DR19
[INFO]: Updating datamodel mdwarf_abundances.
[ERROR]: DM update failed. Could not write stubs for mdwarf_abundances. Error: Cannot create a new cache.  The md stub is not cacheable or does not have a valid template to create a cache. Please create a cacheable yaml file first.

or

[u0707758@archive:products]$ datamodel_generate -f mdwarf_abundances -p MWM_MDWARF/elemental_abundances/mdwarf_abundances-{vers}.fits -k vers=1.0.1 --use-cache DR19 --hdus-only
False None
[ERROR]: Traceback (most recent call last):
  File "/uufs/astro.utah.edu/common/home/u0707758/software/datamodel/vac11/python/datamodel/cli.py", line 333, in <module>
    cli()
  File "/uufs/chpc.utah.edu/common/home/sdss50/software/pkg/miniconda/3.11.8/lib/python3.11/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/uufs/chpc.utah.edu/common/home/sdss50/software/pkg/miniconda/3.11.8/lib/python3.11/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/uufs/chpc.utah.edu/common/home/sdss50/software/pkg/miniconda/3.11.8/lib/python3.11/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/uufs/chpc.utah.edu/common/home/sdss50/software/pkg/miniconda/3.11.8/lib/python3.11/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/uufs/chpc.utah.edu/common/home/sdss50/software/pkg/miniconda/3.11.8/lib/python3.11/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/uufs/astro.utah.edu/common/home/u0707758/software/datamodel/vac11/python/datamodel/cli.py", line 85, in generate
    dm.write_stubs(force=force, use_cache_release=use_cache,
  File "/uufs/astro.utah.edu/common/home/u0707758/software/datamodel/vac11/python/datamodel/generate/datamodel.py", line 625, in write_stubs
    ss.write(force=force, use_cache_release=use_cache_release, full_cache=full_cache,
  File "/uufs/astro.utah.edu/common/home/u0707758/software/datamodel/vac11/python/datamodel/generate/stub.py", line 527, in write
    self.render_content(force=force, release=release, group=group)
  File "/uufs/astro.utah.edu/common/home/u0707758/software/datamodel/vac11/python/datamodel/generate/stub.py", line 511, in render_content
    self._get_cache(force=force)
  File "/uufs/astro.utah.edu/common/home/u0707758/software/datamodel/vac11/python/datamodel/generate/stub.py", line 232, in _get_cache
    content = self._create_cache()
              ^^^^^^^^^^^^^^^^^^^^
  File "/uufs/astro.utah.edu/common/home/u0707758/software/datamodel/vac11/python/datamodel/generate/stub.py", line 204, in _create_cache
    raise ValueError(f'Cannot create a new cache.  The {self.format} stub is not '
ValueError: Cannot create a new cache.  The md stub is not cacheable or does not have a valid template to create a cache. Please create a cacheable yaml file first.

Error finding cli file.  If the datamodel product was pip installed, try running "datamodel generate" instead.