Featurizer not working (other general issues with the package)

[MNLresearcher]

I've been able to get the sort program running, returning the feature values for each region in parquet files (the package doesn't work when selecting h5 as the output file format). When trying to execute the featurize code it produces an embeddings.npz file in a matter of seconds, not in 15-20 minutes as stated in the readme file (I assume that it doesn't read through all parquet files, but I'm not really sure what the cause could be). The resulting embeddings.npz file cannot be parsed by analyze.ipynb.