Traceback (most recent call last):
File "d:\vnstudio\lib\site-packages\vnpy\app\data_manager\ui\widget.py", line 191, in refresh_tree
item.setText(5, d["start"].strftime("%Y-%m-%d %H:%M:%S"))
AttributeError: 'str' object has no attribute 'strftime'
点击刷新发现有数据,但是开始时间和结束时间,什么都没有,并出现上面的错误信息
求大神赐教