Traceback (most recent call last):
File "C:\vnstudio\lib\site-packages\vnstation\cli.py", line 90, in run_trader
module = importlib.import_module(d["module"])
File "C:\vnstudio\lib\importlib__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'vnpy.app.portfolio_manager'
请问大咖，上面的问题如何解决？

升级分两步的，第一次升级VN Station，重启，再点击按钮升级vn.py，再重启。

你这里应该只做了第一步