Kode uji function main(){ exchange.SetContractType(“quarter”); Log(exchange.GetTicker(), exchange.GetCurrency()) while(true){ var ticker = exchange.GetTicker().Last Log(ticker, exchange.GetCurrency()) LogStatus(“ticker:”, ticker) Sleep(1000) } }

Hasil reaksi robot 2018-07-23 09:58:40 Kesalahan TypeError: cannot read property ‘Last’ of null at main (FILE:5) 2018-07-23 09:58:40 Futures_OKCoin Kesalahan 2018-07-23 09:58:20 Informasi null BTC_USD 2018-07-23 09:58:20 Futures_OKCoin Kesalahan