fetch() with async and await - errors

fetch.js

var handleError = function (err) {
	console.warn(err);
	return new Response(JSON.stringify({
		code: 400,
		message: 'Stupid network Error'
	}));
};

var getPost = async function () {

	// Get the post data
	var post = await (await fetch('https://jsonplaceholder.typicode.com/postses/5').catch(handleError)).json();
	if (post.code && post.code === 400) return;

	// Get the author
	var author = await (await fetch('https://jnosplaceholder.typicode.com/users/' + post.userId).catch(handleError)).json();
	if (author.code && author.code === 400) return;

	console.log(post, author);

};

getPost();