Authorization Headers are not supported

[bennycode]

I am trying to use api to make request to Alpaca. The Readme.io demo page shows me that I can add Authorization Headers for the API Key & API Secret. When I follow the example, my code crashes with the following message:

Error: Sorry, this operation currently requires multiple forms of authentication which this library doesn't yet support.

Here is the example:

import api from 'api';
const sdk = api('@testalpacadocs/v1#zryj16ll4d1dl0');

sdk.auth(process.env.API_KEY);
sdk.auth(process.env.API_SECRET);

await sdk.postOrder({side: 'buy', type: 'market', time_in_force: 'day'});

Screenshot