https://margincalculator.angelbroking.com/OpenAPI_File/files/OpenAPIScripMaster.json

When we hit the URl the response is null

Hello All, I am try to place the MCX Option Orders using the below code. MCX has enabled . Any one faced similar issue. Anu Suggestions and help. Thank you!
orderparams={
"variety":"NORMAL",
"tradingsymbol":"CRUDEOIL24MAR6200CE",
"symboltoken":"427032",
"transactiontype":"BUY",
"exchange":"MCX",
"ordertype":"MARKET",
"producttype":"CARRYFORWARD",
"duration":"DAY",

    "squareoff":"0",
    "stoploss":"0",
    "quantity":1 #100
    }
    obj.placeOrder(orderparams)

Error: rderResponse= self._postRequest("api.order.place", params)['data']['orderid']
TypeError: 'NoneType' object is not subscriptable

It works when we hit the URL in the browser but from the python request shows null

Yes No response

https://margincalculator.angelbroking.com/OpenAPI_File/files/OpenAPIScripMaster.json

When we hit the URl the response is null