need help to fix error in my coding, only 4 same errors, but seems like there is no solution for it, help me

this is the part where it has error and i cant manage to fix it

        protected override void OnStart()
        {
            dailyStoch = Indicators.StochasticOscillator(MarketData.GetSymbol("XAUUSD"), TimeFrame.Daily, 7, 14, 5);
            fourHourStoch = Indicators.StochasticOscillator(MarketData.GetSymbol("XAUUSD"), TimeFrame.Hour4, 7, 14, 5);
            oneHourStoch = Indicators.StochasticOscillator(MarketData.GetSymbol("XAUUSD"), TimeFrame.Hour, 7, 14, 5);
            fifteenMinuteStoch = Indicators.StochasticOscillator(MarketData.GetSymbol("XAUUSD"), TimeFrame.Minute15, 7, 7, 5);

it stated that XAUUSD is not in context.