大家好，所以我只是在玩API试图创建一些东西，可以从roblox目录购买一个项目，但我遇到了一个奇怪的错误，并希望您的支持

import re
import json
from requests import post, get

cookie = "somethingicantshow"
ID = 1562150

# getting x-csrf-token

token = post("https://auth.roblox.com/v2/logout", cookies={".ROBLOSECURITY": cookie}).headers['X-CSRF-TOKEN']
print(token)
# getting item details

detail_res = get("https://www.roblox.com/library/" + str(ID))
text = detail_res.text

info = post("https://catalog.roblox.com/v1/catalog/items/details",
                           json={"items": [{"itemType": "Asset", "id": int(ID)}]},
                           headers={"x-csrf-token": token}, cookies={".ROBLOSECURITY": cookie}).json()["data"][0]

productId = post("https://apis.roblox.com/marketplace-items/v1/items/details",
                   json={"itemIds": [info.get("collectibleItemId")]},
                   headers={"x-csrf-token": token}, cookies={".ROBLOSECURITY": cookie})  #int(get("https://api.roblox.com/marketplace/productinfo?assetId="+ str(ID)).json("ProductId"))#["ProductId"])
productId = productId.json()[0]["collectibleProductId"]
expectedPrice = 0 #int(re.search("data-expected-price=\"(\d+)\"", text).group(1))
expectedSellerId = 1 #int(re.search("data-expected-seller-id=\"(\d+)\"", text).group(1))

headers = {
    "x-csrf-token": token,
    "content-type": "application/json; charset=UTF-8"
}

data = {
    "expectedCurrency": 1,
    "expectedPrice": expectedPrice,
    "expectedSellerId": expectedSellerId
}

dataLoad = json.dumps(data)
buyres = post("https://economy.roblox.com/v1/purchases/products/" + str(productId), headers=headers,
              data=dataLoad,
              cookies={".ROBLOSECURITY": cookie})

if buyres.status_code == 200:
    print("Successfully bought item")
else:
    print("failed" + str(buyres.status_code))

错误是：

Traceback (most recent call last):
  File "C:\Users\Aarush Kumar\AppData\Local\Programs\Python\Python311\Lib\site-packages\requests\models.py", line 971, in json
    return complexjson.loads(self.text, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Aarush Kumar\AppData\Local\Programs\Python\Python311\Lib\json\__init__.py", line 346, in loads
    return _default_decoder.decode(s)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Aarush Kumar\AppData\Local\Programs\Python\Python311\Lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Aarush Kumar\AppData\Local\Programs\Python\Python311\Lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\Aarush Kumar\Downloads\limitedsnipe\limitedSniper.py", line 24, in <module>
    productId = productId.json()[0]["collectibleProductId"]
                ^^^^^^^^^^^^^^^^
  File "C:\Users\Aarush Kumar\AppData\Local\Programs\Python\Python311\Lib\site-packages\requests\models.py", line 975, in json
    raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

会很感激你的帮助的。谢谢。
我尝试了很多东西，并在devforum上阅读了很多主题，但由于这是一个python错误，我不得不从这里寻求帮助。