是数据格式的问题，修正一下数据格式可以了，在尾部添加1列分隔符。
@zugba said in Index out of range error using CSV file:

datetime,open,high,low,close,
2020-05-04,209.73,210.29,195.2,206.65,
2020-05-05,206.64,210.88,201.33,204.8,
2020-05-06,205.58,210.76,198.61,198.88,
2020-05-07,197.84,215.0,197.12,212.68,
2020-05-08,213.01,216.25,207.12,211.6,
2020-05-09,210.96,214.5,208.68,211.55,
2020-05-10,210.0,210.0,174.43,188.27,
2020-05-11,188.38,193.5,175.76,186.42,
2020-05-12,185.94,192.06,185.94,189.9,
2020-05-13,190.0,201.19,188.72,199.12,
2020-05-14,200.1,205.97,196.06,203.1,
2020-05-15,203.48,204.15,191.2,194.23,
2020-05-16,193.41,203.27,193.41,200.51,
2020-05-17,200.38,209.99,199.94,207.74,
2020-05-18,208.35,217.01,208.03,214.49,
2020-05-19,214.17,215.82,209.49,214.51,
2020-05-20,214.46,215.6,205.96,210.0,
2020-05-21,210.0,211.5,191.84,198.52,