[Bug]: contract.createBatch(metaDatas)

[bhswallow]

Prerequisites

• I have checked that @thirdweb-dev/react and the @thirdweb-dev/sdk are on the latest stable version and the bug still exists.
• I have checked existing issues and I was unable to find a duplicate of this.

Optional

• I am willing to contribute a PR that fixes the problem with some guidance.

Describe the bug
const metadatas = [
{
name: "Cool NFT",
description: "This is a cool NFT",
image: fs.readFileSync("path/to/image.png"), // This can be an image url or file
},
{
name: "Cool NFT",
description: "This is a cool NFT",
image: fs.readFileSync("path/to/image.png"),
},
];

How do I upload the same parameters as the dashboard?
media\properties\backgroud color\external url
the docs not say

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots