How can I retrieve a customer's note in my website's registration data?

Technical Q&A
3

Hi I tried as per the idea above, i am continuously getting the following error

{
    "errors": "[API] Invalid API key or access token (unrecognized login or wrong password)"
}

I used the following rest api

https://xxxx.myshopify.com/admin/api/2021-07/orders/{order_id}.json?fields=customer&X-Shopify-Access-Token=...abcd1234....