Internal Server Error in get_license_response about audible HOT 4 CLOSED

import base64
import json
import pathlib

import audible
import httpx
from audible.aescipher import decrypt_voucher_from_licenserequest as dv


# files downloaded via this script can be converted
# audible uses a new format (aaxc instead of aax)
# more informations and workaround here:
# https://github.com/mkb79/Audible/issues/3
# especially: https://github.com/mkb79/Audible/issues/3#issuecomment-705262614


# get license response for book
def get_license_response(client, asin, quality):
    try:
        response = client.post(
            f"content/{asin}/licenserequest",
            body={
                "drm_type": "Adrm",
                "consumption_type": "Download",
                "quality": quality
            }
        )
        return response
    except Exception as e:
        print(f"Error: {e}")
        return


def get_download_link(license_response):
    # example download function
    return license_response["content_license"]["content_metadata"]["content_url"]["offline_url"]


def download_file(url, filename):
    with httpx.stream("GET", url) as r:
        with open(filename, 'wb') as f:
            for chunck in r.iter_bytes():
                f.write(chunck)
    return filename


if __name__ == "__main__":
    # These 3 variables must be filled out
    fn = FILENAME_OF_AUTH_FILE
    asin = YOUR_ASIN
    title = TARGET_FILE_AAXC

    auth = audible.FileAuthenticator(
        filename=fn
    )
    client = audible.Client(auth)
    lr = get_license_response(client, asin, quality="Extreme")
    if lr:
        dl_link = get_download_link(lr)
        filename = pathlib.Path.cwd() / title
        print(f"download link now: {dl_link}")
        status = download_file(dl_link, filename)
        print(f"downloaded file: {status} to {filename}")

        voucher_file = filename.with_suffix(".json")
        decrypted_voucher = dv(auth=auth, license_response=lr)
        print(decrypted_voucher)
        voucher_file.write_text(json.dumps(decrypted_voucher, indent=4))
        print(f"saved voucher to: {voucher_file}")