Help with session - I can't get the refresh_token

import { supabaseClient } from '@supabase/supabase-auth-helpers/nextjs';
import { useUser } from '@supabase/supabase-auth-helpers/react';

const Onboarding = () => {
  const { user } = useUser();
...
  useEffect(() => {
    if (user) {
      console.log('session: ', supabaseClient.auth.session());
...
}

{
    "access_token": "user.jwt.tokenxxxx",
    "token_type": "bearer",
    "user": null
}