Cloud Firestore Snapshot Listener on subcollection

[akeva001]

Is it possible to have a snapshot listener on a subcollection like so. I am unable to get this to work, but I am able to with modular version of firebase v9.

const postRef = firestore()
        .collection("users")
        .doc(auth.currentUser.uid)
        .collection("posts");

const unsub = postRef
        .orderBy("createdAt", "desc")
        .limit(1)
        .onSnapshot((docSnap) => {
           console.log(docSnap);
        });

[akeva001]

Figured out why I was getting a null response. It was because I was not handling the error for the snapshot through the second argument.