KeyError: 'price' when calling calculate_fee with Gemini

• OS: macOS Mojave (version 10.14.5)
• Programming Language version: Python 3.7.3
• CCXT version: 1.18.758
• Exchange: Gemini
• Method: calculate_fee

I am trying to use calculate_fee method but getting KeyError: 'price' error. When I browse through the section Precision and limits in the manual it is not clear what I am doing wrong. Also, I can place the order itself on the exchange without any issues (last line that I have commented out).

symbol = 'ETH/USD' 
order_type = 'StopLimit'  
side = 'sell'   
amount = 1.0
price = 500.0 
exchange.load_markets()

# Error -->  KeyError: 'price' 
print(exchange.calculate_fee(symbol, order_type, side, amount, price))  

# Works fine without issues.
#order = exchange.create_order(symbol, order_type, side, amount, price)

Error:

File "/usr/local/lib/python3.7/site-packages/ccxt/base/exchange.py", line 1566, in calculate_fee
    cost = float(self.cost_to_precision(symbol, amount * price))
  File "/usr/local/lib/python3.7/site-packages/ccxt/base/exchange.py", line 1070, in cost_to_precision
    return self.decimal_to_precision(cost, ROUND, self.markets[symbol]['precision']['price'], self.precisionMode)
KeyError: 'price'

[razi-rais]

Working now. Thanks.

[razi-rais]

@kroitor After installing the build 1.18.791 getting error – NotSupported: gemini the Gemini API doc HTML markup has changed, breaking the parser of order limits and precision info for Gemini markets

File "/usr/local/lib/python3.7/site-packages/ccxt/gemini.py", line 178, in fetch_markets_from_web
 raise NotSupported(error)
ccxt.base.errors.NotSupported: gemini the Gemini API doc HTML markup has changed, breaking the parser of order limits and precision info for Gemini markets.