没有安装在默认目录，有问题吗？
Traceback (most recent call last):
File "e:\lhjy\vnstudio\lib\site-packages\vnstation\cli.py", line 90, in run_trader
module = importlib.import_module(d["module"])
File "e:\lhjy\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 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "e:\lhjy\vnstudio\lib\site-packages\vnpy\app\cta_strategy\init.py", line 9, in <module>
from .engine import CtaEngine
File "e:\lhjy\vnstudio\lib\site-packages\vnpy\app\cta_strategy\engine.py", line 40, in <module>
from vnpy.trader.database import database_manager
File "e:\lhjy\vnstudio\lib\site-packages\vnpy\trader\database\init.py", line 12, in <module>
database_manager: "BaseDatabaseManager" = init(settings=settings)
File "e:\lhjy\vnstudio\lib\site-packages\vnpy\trader\database\initialize.py", line 6, in init
driver = Driver(settings["driver"])
File "e:\lhjy\vnstudio\lib\enum.py", line 309, in call
return cls.new(cls, value)
File "e:\lhjy\vnstudio\lib\enum.py", line 543, in new
return cls.missing(value)
File "e:\lhjy\vnstudio\lib\enum.py", line 556, in missing
raise ValueError("%r is not a valid %s" % (value, cls.name__))
ValueError: '\nMongoDB' is not a valid Driver
