Traceback (most recent call last):
File "D:\veighna_studio\lib\site-packages\vnpy_datamanager\ui\widget.py", line 384, in update_data
self.engine.download_bar_data(
File "D:\veighna_studio\lib\site-packages\vnpy_datamanager\engine.py", line 216, in download_bar_data
self.database.save_bar_data(data)
File "D:\veighna_studio\lib\site-packages\vnpy_mongodb\mongodb_database.py", line 138, in save_bar_data
overview["count"] = c.count()
AttributeError: 'Cursor' object has no attribute 'count'
在VeighNa3.10版本里，数据管理的更新数据菜单，点击后会触发异常。以上是错误信息，哪位兄弟解决了，谢谢！！！
