Django AWS S3 pdf Embed Integration

Hi,
I've successfully integrated pdf Embed API on my local machine, but I want to use S3 as bucket.
It's failing from some reason.

My aws s3 CORS is:

[
    {
        "AllowedHeaders": [
            "*"
        ],
        "AllowedMethods": [
            "GET",
            "HEAD",
            "POST",
            "PUT"
        ],
        "AllowedOrigins": [
            "*"
        ],
        "ExposeHeaders": []
    }
]

And I tried once with Adobe Credential on which allowed domain is 'localhost', and once with 'django-02-files.s3.amazonaws.com'.

Both didn't work for me..

Any suggestion will be helpful !

Thanks !

P.s-

I well aware that currectly all my aws keys are in the JS code, it will be the next thing that i will fix.

(I'm a fresh CS Grad that builds my first project)