File "C:\veighna_studio\lib\runpy.py", line 196, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\veighna_studio\lib\runpy.py", line 86, in _run_code
exec(code, run_globals)
File "build\bdist.win-amd64\egg\veighna_station\trader.py", line 39, in <module>
File "build\bdist.win-amd64\egg\veighna_station\trader.py", line 30, in run_trader
File "C:\veighna_studio\lib\site-packages\vnpy\trader\engine.py", line 103, in add_app
engine: BaseEngine = self.add_engine(app.engine_class)
File "C:\veighna_studio\lib\site-packages\vnpy\trader\engine.py", line 74, in add_engine
engine: BaseEngine = engine_class(self, self.event_engine)
File "C:\veighna_studio\lib\site-packages\vnpy_ctabacktester\engine.py", line 51, in init
self.database: BaseDatabase = get_database()
File "C:\veighna_studio\lib\site-packages\vnpy\trader\database.py", line 159, in get_database
database = module.Database()
AttributeError: module 'vnpy_dolphindb' has no attribute 'Database'
