Traceback (most recent call last):
File "C:\veighna_studio\lib\site-packages\vnpy_datamanager\ui\widget.py", line 216, in import_data
start, end, count = self.engine.import_data_from_csv(
File "C:\veighna_studio\lib\site-packages\vnpy_datamanager\engine.py", line 59, in import_data_from_csv
dt: datetime = datetime.strptime(item[datetime_head], datetime_format)
File "C:\veighna_studio\lib_strptime.py", line 568, in _strptime_datetime
tt, fraction, gmtoff_fraction = _strptime(data_string, format)
File "C:\veighna_studio\lib_strptime.py", line 349, in _strptime
raise ValueError("time data %r does not match format %r" %
ValueError: time data '2022-8-9 21:43' does not match format '%Y-%m-%d %H:%M:%S'

%Y-%m-%d %H:%M:%S格式要把秒也要填写上，例如：2022-8-9 21:43:00
可以参考使用文档的导入数据中的格式信息：https://www.vnpy.com/docs/cn/community/app/data_manager.html