问用Python调取Alpha Vantage A股API出错？

base_site = "https://www.alphavantage.co/query?"
r = requests.get(base_site, params = {"function": "TIME_SERIES_DAILY_ADJUSTED", 
                                      "symbol" : "601857.SHH", 
                                      "api" : "XXXXXXXX"})

{
    "Error Message": "the parameter apikey is invalid or missing. Please claim your free API key on (https://www.alphavantage.co/support/#api-key). It should take less than 20 seconds."
}