按照帖子中的代码补全后运行，出现下面错误：
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\site-packages\vnpy\trader\engine.py", line 98, in add_gateway
self.tick_filters[gateway_name] = TickFilter(self.event_engine, gateway_name)
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\site-packages\vnpy\usertools\tickfilter.py", line 58, in init
self.db = get_database()
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\site-packages\vnpy\trader\database.py", line 177, in get_database
database = module.Database()
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\site-packages\vnpy_mysql\mysql_database.py", line 230, in init
self.db.connect()
File "C:\Users\AppData\Local\Programs\Python\Python310\lib\site-packages\peewee.py", line 3259, in connect
raise OperationalError('Connection already opened.')
peewee.OperationalError: Connection already opened.
发给gpt折腾完还是没解决，请教前辈帮忙，感谢！
