Why am I receiving this error even when I configure the federated database from CLI?
This looks like a bug as you don’t seem to have any regular expressions in the storage configuration in the first place.
Would you be able to send me an email at benjamin.flast@mongodb.com so I can get this resolved?
(Just a note, if you’re configuring the storage configuration via the MongoDB shell then this error should not prevent you from doing anything in the mean time.)