Here is my users collection, chats is a sub collection in users

users -
      -userID1
              -chats -
                     - chatID1
                            chatDetails
      -userID2
              -chats -
                     - chatID2
                            chatDetails

I want to update a document in chats, here is my code

export const setChatNewMessageAlert = async (user_id, chat_id, bool) => {
  const chatRef = doc(db, "users", user_id, "chats", chat_id);
  const update = {
    new_message: bool,
  };
  await setDoc(chatRef, update, { merge: true });
};

for some reason is giving me this ERROR FirebaseError: Invalid document reference. Document references must have an even number of segments, but users/I7Flqla5m9OWStsoWs4PL3ncbQV2/chats has 3

even though I have four segments.