'catalog.json' metadata file must be specified for a valid catalog

[cloudmainc]

Tried to add the catalog as shown in the readme but got an error about a missing catalog.json file.

Catalog Name - kasm
Repository - https://github.com/kasmtech/kasm-truenas-charts.git
Preffered Trains - stable
Branch - develop

error
Error: undefined
'catalog.json' metadata file must be specified for a valid catalog
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More info...
Error: Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/middlewared/job.py", line 427, in run
await self.future
File "/usr/lib/python3/dist-packages/middlewared/job.py", line 465, in __run_body
rv = await self.method(*([self] + args))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/service/crud_service.py", line 197, in nf
rv = await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/schema/processor.py", line 44, in nf
res = await f(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/schema/processor.py", line 177, in nf
return await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/plugins/catalogs_linux/update.py", line 288, in do_create
verrors.check()
File "/usr/lib/python3/dist-packages/middlewared/service_exception.py", line 70, in check
raise self
middlewared.service_exception.ValidationErrors: [EINVAL] cached_catalog_file: 'catalog.json' metadata file must be specified for a valid catalog