我正在尝试访问API Interactive brokers的历史数据，但无法获取数据。
我的代码如下所示：

from ibapi.client import EClient
from ibapi.wrapper import EWrapper
from ibapi.contract import Contract
import datetime

class TestApp(EClient, EWrapper):
    def __init__(self):
        EClient.__init__(self, self)

    def nextValidId(self, orderId: int):
        # Get the current year and month
        now = datetime.datetime.now()
        year = now.year
        month = now.month

        contract = Contract()
        contract.symbol = "ES"
        contract.secType = "FUT"
        contract.exchange = "GLOBEX"
        contract.currency = "USD"
        contract.localSymbol = "ESZ7"  # Set the local symbol

        self.reqHistoricalData(orderId, contract, "", "1 D", "1 hour", "TRADES", 0, 1, True, [])

    def historicalData(self, reqId, bar):
        print(f"Historical data: {bar}")

    def historicalDataEnd(self, reqId, start, end):
        print("End of HistoricalData")
        print(f"Start: {start}, End: {end}")

app = TestApp()
app.connect('127.0.0.1', 7497, 1)
app.run()

我得到了以下错误：

• • 错误1 200找不到请求的安全定义**

我有期货合约的实时运行，我是否需要激活另一个授权？
如果这里有人能帮我解决这个问题，我将非常感激。