Why is it that reading tokens today is always wrong?

I've been reading the data for the past few days and it's been giving me an error today, even though I've changed it to the simplest:

def main (: records = exchange.GetRecords ((PERIOD_H1)) is the name of the Log (the first k-string data is, Time:, records[0][Time], Open:, records[0][Open], High:, records[0][High]) Log (the second root of the k-string data is, Time:, records[1] [Time], Close:, records[1] [Close]) Log (current K line (latest) log, records[-1], log on one of the K lines log, records[-2])

Or mistakes. GetRecords: type assertion to []interface{} failed

I'm using a customized trading pair of tokens, BTC_USD.