# Buggy code
def check_handle_timedout(self) -> None:
    """
    Check if any orders are timed out and cancel if neccessary
    :param timeoutvalue: Number of minutes until order is considered timed out
    :return: None
    """

    for trade in Trade.get_open_order_trades():
        try:
            if not trade.open_order_id:
                continue
            order = self.exchange.get_order(trade.open_order_id, trade.pair)
        except (RequestException, DependencyException, InvalidOrderException):
            logger.info(
                "Cannot query order for %s due to %s", trade, traceback.format_exc()
            )
            continue

        # Check if trade is still actually open
        if float(order.get("remaining", 0.0)) == 0.0:
            self.wallets.update()
            continue

        if (order["side"] == "buy" and order["status"] == "canceled") or (
            self._check_timed_out("buy", order)
        ):
            self.handle_timedout_limit_buy(trade, order)
            self.wallets.update()

        elif (order["side"] == "sell" and order["status"] == "canceled") or (
            self._check_timed_out("sell", order)
        ):
            self.handle_timedout_limit_sell(trade, order)
            self.wallets.update()


# Traceback (Exception)
2020-02-20 22:47:28,025 - freqtrade - ERROR - Fatal exception!
Traceback (most recent call last):
File "/opt/tradebot/freqtrade/.env/lib/python3.7/site-packages/talib/__init__.py", line 20, in wrapper
for arg in chain(args, kwargs.values())
StopIteration

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/freqtrade/freqtrade/main.py", line 36, in main
return_code = args['func'](args)
File "/freqtrade/freqtrade/commands/optimize_commands.py", line 76, in start_hyperopt
hyperopt.start()
File "/freqtrade/freqtrade/optimize/hyperopt.py", line 488, in start
preprocessed = self.backtesting.strategy.tickerdata_to_dataframe(data)
File "/freqtrade/freqtrade/strategy/interface.py", line 448, in tickerdata_to_dataframe
for pair, pair_data in tickerdata.items()}
File "/freqtrade/freqtrade/strategy/interface.py", line 448, in <dictcomp>
for pair, pair_data in tickerdata.items()}
File "/freqtrade/freqtrade/strategy/interface.py", line 464, in advise_indicators
return self.populate_indicators(dataframe, metadata)
File "/freqtrade/user_data/strategies/MyDev.py", line 205, in populate_indicators
dataframe['mfi'] = ta.MFI(dataframe)
File "talib/_abstract.pxi", line 352, in talib._ta_lib.Function.__call__
File "talib/_abstract.pxi", line 383, in talib._ta_lib.Function.__call_function
File "/opt/tradebot/freqtrade/.env/lib/python3.7/site-packages/talib/__init__.py", line 24, in wrapper
return func(*args, **kwargs)
File "talib/_func.pxi", line 8454, in talib._ta_lib.MFI
Exception: volume is not double

# Fixed code
def check_handle_timedout(self) -> None:
    """
    Check if any orders are timed out and cancel if neccessary
    :param timeoutvalue: Number of minutes until order is considered timed out
    :return: None
    """

    for trade in Trade.get_open_order_trades():
        try:
            if not trade.open_order_id:
                continue
            order = self.exchange.get_order(trade.open_order_id, trade.pair)
        except (RequestException, DependencyException, InvalidOrderException):
            logger.info(
                "Cannot query order for %s due to %s", trade, traceback.format_exc()
            )
            continue

        # Check if trade is still actually open
        if float(order.get("remaining", 0.0)) == 0.0:
            self.wallets.update()
            continue

        if (order["side"] == "buy" and order["status"] == "canceled") or (
            self._check_timed_out("buy", order)
        ):
            self.handle_timedout_limit_buy(trade, order)
            self.wallets.update()
            order_type = self.strategy.order_types["buy"]
            self._notify_buy_cancel(trade, order_type)

        elif (order["side"] == "sell" and order["status"] == "canceled") or (
            self._check_timed_out("sell", order)
        ):
            self.handle_timedout_limit_sell(trade, order)
            self.wallets.update()
            order_type = self.strategy.order_types["sell"]
            self._notify_sell_cancel(trade, order_type)