Why am I getting a 503 error when uploading a video to a store?

Shopify Apps
1

I’m following the instructions in step 1 here to upload a video to a shop owner’s store. I was able to get the parameters back from stagedUploadsCreate but when posting the file using form data I receive a Service Unavailable status 503 error.

Also wondering once I successfully get the video posted, will the resourceUrl be publicly available for the store owner to display the video in their storefront?

Here is the code I’m using to create and submit the form data:

const response = await fetch(
    `https://${shop}/admin/api/2021-10/graphql.json`,
    {
    method: "POST",
    headers: {
        "Content-Type": "application/json",
        "X-Shopify-Access-Token": accessToken,
    },
    body: prepareVideoToUpload,
    }
);

const responseJson = await response.json();

const target = responseJson.data.stagedUploadsCreate.stagedTargets;
const parameters = target[0].parameters;
const resourceUrl = target[0].resourceUrl;

const form = new FormData();
form.append(parameters[0].name, parameters[0].value);
form.append(parameters[1].name, parameters[1].value);
form.append(parameters[2].name, parameters[2].value);
form.append(parameters[3].name, parameters[3].value);
form.append(
  "file",
  fs.readFileSync(`files/${fileData.name}`),
  `files/${fileData.name}`
);

// upload request
await axios
    .post(target[0].url, {
        body: form,
    })
    .then((res) => {
        console.log("upload res: ", res);
    })
    .catch((e) => {
        console.log("upload e: ", e);
    });
2

I must have had wrong syntax somewhere, got the request to go through using the following code below.

However this now returns a 403 Forbidden error

const form = new FormData();
form.append(parameters[0].name, parameters[0].value);
form.append(parameters[1].name, parameters[1].value);
form.append(parameters[2].name, parameters[2].value);
form.append(parameters[3].name, parameters[3].value);
form.append(
  "file",
  fs.readFileSync(`files/${fileData.name}`),
  `files/${fileData.name}`
);

// upload request
await axios(target[0].url, form, {
    headers: {
    ...form.getHeaders(),
    },
})
.then((res) => {
    console.log("upload res: ", res);
})
.catch((e) => {
    console.log("upload e: ", e.response);
});