Okay. I have found how to resolve it
 

var buy_position = Positions.FindAll("order_buy", SymbolName, TradeType.Buy);

var sell_position = Positions.FindAll("order_sell", SymbolName, TradeType.Sell);

foreach (var position in buy_position)

{

if (close_buy)

ClosePosition(position);

}

foreach (var position in sell_position)

{

if (close_sell)

ClosePosition(position);

}

Okay. I used debugger and I see error on ClosePosition 

the NullReferenceException indicates that your code is trying to work with an object that has a null value as its reference

Okay, thanks. 
I used your code and it continue to stop after one bar. 
I think something wrong with ClosePosition and bot can't repeat cycle 
OnTick or OnBar

I need bot that can work 24/7. And if it turn off on next bar, this is bullshit. 

I see what you have chenged:
1) FullAccess
2) protected override void OnBar()
3) if (close_buy)
                ClosePosition(buy_position);
 
But it didn't resolve main problem. 

Thanks for reccomendations. I will try to find problem in debugger

Hi, thanks for your reply. 

Try to backtest it. 

Bot stops on next bar - this is the problem. 

If i take away function ClosePosition - bot works

So I think the problem is with it

It stops my bot without any mistakes in code or build

It is hard to find mistake