The mistakes I get when I select a currency pair, as shown below. Please help. Coin pair: BTC Traceback (most recent call last): File "C:\Users\Q\pbm\pumpbot.py", line 159, in <module> if averagePrice == 0: averagePrice = float(client.get_avg_price(symbol=tradingPair)['price']) File "C:\Users\Q\AppData\Local\Programs\Python\Python39\lib\site-packages\binance\client.py", line 888, in get_avg_price return self._get('avgPrice', data=params, version=self.PRIVATE_API_VERSION) File "C:\Users\Q\AppData\Local\Programs\Python\Python39\lib\site-packages\binance\client.py", line 288, in _get return self._request_api('get', path, signed, version, kwargs) File "C:\Users\Q\AppData\Local\Programs\Python\Python39\lib\site-packages\binance\client.py", line 238, in _request_api return self._request(method, uri, signed, kwargs) File "C:\Users\Q\AppData\Local\Programs\Python\Python39\lib\site-packages\binance\client.py", line 233, in _request return self._handle_response() File "C:\Users\Q\AppData\Local\Programs\Python\Python39\lib\site-packages\binance\client.py", line 281, in _handle_response raise BinanceAPIException(self.response) binance.exceptions.BinanceAPIException: APIError(code=-1121): Invalid symbol.