Buy and sell orders do not work for BTCUSD

I have a robot in MQL5 that I use to trade assets on the Brazilian stock exchange. The robot works perfectly for opening buy and sell orders, but when testing it with BTCUSD, it fails on the sell orders. Looking at the logs in the Experts tab, it seems that the values are correct, and I don't understand why it's not working. I'm trading on a demo account with Deriv, using a M1 time frame.

Below are excerpts from the code that I consider important to demonstrate the functioning of the buy and sell functions, followed by a part of the log showing the error in the Experts tab.

#include <Trade\Trade.mqh>
#include <Trade\SymbolInfo.mqh>


CTrade trade;
CSymbolInfo symbolInfo; 

MqlTick currentTick;



void BuyOperation() {
   PRC = symbolInfo.NormalizePrice(currentTick.ask);
   STL = symbolInfo.NormalizePrice(PRC - (stopLoss));
   TKP = symbolInfo.NormalizePrice(PRC + (takeProfit));

   Print(">>>>>> BUY - lotSize: ", lotSize, " _Symbol: ", _Symbol, " PRC: ", PRC, ", STL: ", STL, ", TKP: ", TKP);
   
   if (trade.Buy(lotSize, _Symbol, PRC, STL, TKP, "Buy")) {
      Print("Ordem de Compra- sem falha. ResultRetcode: ", trade.ResultRetcode(), ", RetcodeDescription: ", trade.ResultRetcodeDescription());
   } else {
      Print("Ordem de Compra- com falha. ResultRetcode: ", trade.ResultRetcode(), ", RetcodeDescription: ", trade.ResultRetcodeDescription());
   }
}


void SellOperation() {
   PRC = symbolInfo.NormalizePrice(currentTick.bid);
   STL = symbolInfo.NormalizePrice(PRC + (stopLoss));
   TKP = symbolInfo.NormalizePrice(PRC - (takeProfit));

   Print(">>>>>> SELL - lotSize: ", lotSize, " _Symbol: ", _Symbol, " PRC: ", PRC, ", STL: ", STL, ", TKP: ", TKP);

   if (trade.Sell(lotSize, _Symbol, PRC, STL, TKP, "Sell")) {
      Print("Ordem de Venda - sem falha. ResultRetcode: ", trade.ResultRetcode(), ", RetcodeDescription: ", trade.ResultRetcodeDescription());
   } else {
      Print("Ordem de Venda - com falha. ResultRetcode: ", trade.ResultRetcode(), ", RetcodeDescription: ", trade.ResultRetcodeDescription());
   }
}

Tab Experts log:

2023.05.21 12:12:14.056 SAR (BTCUSD,M1)   >>>>>> SELL - lotSize: 0.01 _Symbol: BTCUSD PRC: 26921.0, STL: 26951.0, TKP: 26821.0

2023.05.21 12:12:14.056 SAR (BTCUSD,M1)   CTrade::OrderSend: market sell 0.01 BTCUSD sl: 26951.000 tp: 26821.000 [invalid stops]

2023.05.21 12:12:14.056 SAR (BTCUSD,M1)   Ordem de Venda - com falha. ResultRetcode: 10016, RetcodeDescription: invalid stops

Can anyone tell me what could be wrong? Could it be the price normalization section?