Invalid `queries` param: Queries must be an array

export default async ({ req, res }) => {
  const client = new Client()
    .setEndpoint(process.env.APPWRITE_ENDPOINT)
    .setProject(process.env.APPWRITE_FUNCTION_PROJECT_ID)
    .setKey(process.env.APPWRITE_API_KEY);

  const users = new Users(client);

  const { email } = JSON.parse(req.body);

  const list = await users.list({
    queries: [Query.equal('email', email)],
  });

  if (list.total === 0) {
    return res.json({ provider: null });
  }

  const userId = list.users[0].$id;

  const identities = await users.listIdentities(userId);

  const provider = identities.identities.length
    ? identities.identities[0].provider
    : null;

  return res.json({ provider });
};