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我已经使用alpha vantage python API一段时间了，但我只需要提取每日和日内时间序列数据。我正在尝试提取扩展的日内数据，但没有运气让它发挥作用。尝试运行以下代码：

from alpha_vantage.timeseries import TimeSeries

apiKey = 'MY API KEY'

ts = TimeSeries(key = apiKey, output_format = 'pandas')

totalData, _ = ts.get_intraday_extended(symbol = 'NIO', interval = '15min', slice = 'year1month1')

print(totalData)

给我以下错误：

Traceback (most recent call last):
  File "/home/pi/Desktop/test.py", line 9, in <module>
    totalData, _ = ts.get_intraday_extended(symbol = 'NIO', interval = '15min', slice = 'year1month1')
  File "/home/pi/.local/lib/python3.7/site-packages/alpha_vantage/alphavantage.py", line 219, in _format_wrapper
    self, *args, **kwargs)
  File "/home/pi/.local/lib/python3.7/site-packages/alpha_vantage/alphavantage.py", line 160, in _call_wrapper
    return self._handle_api_call(url), data_key, meta_data_key
  File …