API BUG

chexki

When I try to place SELL order from API example, my order is getting placed.

{
"variety":"NORMAL",
"tradingsymbol":"SBIN-EQ",
"symboltoken":"3045",
"transactiontype":"SELL",
"exchange":"NSE",
"ordertype":"MARKET",
"producttype":"DELIVERY",
"duration":"DAY",
"price":"194.50",
"squareoff":"0",
"stoploss":"0",
"quantity":"1"
}

But, when I try to put my stockname & symbol to it. it returns an error "TypeError: 'NoneType' object is not subscriptable"

{
"variety":"NORMAL",
"tradingsymbol":"COALINDIA-EQ",
"symboltoken":"20374",
"transactiontype":"SELL",
"exchange":"NSE",
"ordertype":"MARKET",
"producttype":"DELIVERY",
"duration":"DAY",
"price":"194.50",
"squareoff":"0",
"stoploss":"0",
"quantity":"1"
}

This is really a frustrating problem, no proper documentation of errors is present.
Please help & resolve it. ASAP