react-native-firestack: [V3] ios login errors from loginWithEmailAndPassword coming back as undefined

Hi so I’m using the latest v3 branch like this:

export const loginWithEmail = ({ email, password }) =>
((dispatch: Dispatch) => {
  console.log(email, password);
  dispatch({ type: BEGIN_EMAIL_LOGIN });
  firestack.auth()
  .signInWithEmailAndPassword(email, password)
  .then((user) => {
    console.log('firebase sign in succesful: ', user)
    dispatch({
      type: FIREBASE_LOGIN_SUCCESFUL,
    });
  })
  .catch(err => console.log('error logging into firebase ', err));
});

which works if I provide the right email and password, but any error I get back is just coming back as an object with code of “” and message of undefined:

once I have some error messages to go off I’m finally going to get around to making that error code nromalising module Ive been promising forever, but I need an error code haha