I think you have a typo in the second code example: let students = useDbDatum(`classes/${classUid}/students`); let uids = Object.keys(students || {}); le

I think you have a typo in the second code example: let students = useDbDatum(`classes/${classUid}/students`); let uids = Object.keys(students || {}); let paths = studentIds.map(id => `students/${id}/name`); studentIds on line 3 should probably be uids