Using prefetch query in getserversideprops (next.js) fails when deploying on Vercel

const chain = EvmChain.GOERLI;

async function getOwners() {
  await Moralis.start({ apiKey: process.env.NEXT_PUBLIC_MORALIS_API_KEY });
  const response = await Moralis.EvmApi.nft.getNFTOwners({
    address: GLIMMERS_GOERLI_ADDRESS,
    chain,
  });
  const responseJson = JSON.stringify(response);
  return responseJson;
}

const queryClient = new QueryClient();
const STALE_TIME = 10000;

export async function getServerSideProps(context) {
  await queryClient.prefetchQuery(["getOwners"], getOwners, {
    staleTime: STALE_TIME,
  });
  return {
    props: {
      dehydratedState: dehydrate(queryClient),
    },
  };
}

export default function Dashboard() {
  const { data: rawOwners } = useQuery(["getOwners"], getOwners, {
    staleTime: STALE_TIME,
  });
  console.log(rawOwners);     // <- this returns undefined ONLY on vercel