数据管理模块点击更新数据出现如下代码
Traceback (most recent call last):
File "c:\vnstudio\lib\site-packages\vnpy\app\data_manager\ui\widget.py", line 355, in update_data
data = self.engine.get_bar_data_available()
AttributeError: 'ManagerEngine' object has no attribute 'get_bar_data_available'
