boltz1 model featurization fails with pocket constraints

[timpalpant]

I am attempting to run the pocket.yaml config here but it fails with lots of:

Featurizer failed on test with error argument of type 'int' is not iterable. Skipping.
Featurizer failed on test with error argument of type 'int' is not iterable. Skipping.
Featurizer failed on test with error argument of type 'int' is not iterable. Skipping.
Featurizer failed on test with error argument of type 'int' is not iterable. Skipping.
Featurizer failed on test with error argument of type 'int' is not iterable. Skipping.
Featurizer failed on test with error argument of type 'int' is not iterable. Skipping.
<SNIP>

when --model boltz1. It seems fine if you use --model boltz2. I am using commit e800b5be (2.0.1)