Feature extraction for learning to rank not arising any error if the feature store doesn't exists

I have tried to do a feature extraction setting in the field list of the query:

[features store=my_store efi.first_feature=1 efi.second_feature=1]

The feature store list was empty, therefore I have pushed no feature store in Solr, but the query is working anyway, without giving me any error.

It would be useful to have a message returned telling me that the feature store I'm calling is not present.