Traceback (most recent call last):
File "D:/vnpy/vnpy-2.3.0/examples/vn_trader/run.py", line 60, in <module>
main()
File "D:/vnpy/vnpy-2.3.0/examples/vn_trader/run.py", line 33, in main
main_engine.add_gateway(CtpGateway)
File "D:\vnpy\vnpy-2.3.0\vnpy\trader\engine.py", line 79, in add_gateway
gateway = gateway_class(self.event_engine)
TypeError: CtpGateway() takes no arguments
