Traceback (most recent call last):
File "D:\VeighNa_Studio\Lib\site-packages\vnpy\trader\ui\mainwindow.py", line 277, in open_widget
widget = widget_class(self.main_engine, self.event_engine)
File "D:\VeighNa_Studio\Lib\site-packages\vnpy_ctastrategy\ui\widget.py", line 42, in init
self.cta_engine.init_engine()
~~~~~^^
File "D:\VeighNa_Studio\Lib\site-packages\vnpy_ctastrategy\engine.py", line 105, in init_engine
self.load_strategy_data()
~~~~~^^
File "D:\VeighNa_Studio\Lib\site-packages\vnpy_ctastrategy\engine.py", line 831, in load_strategy_data
self.strategy_data = load_json(self.data_filename)
~~~^^^^^^^^^^^^^^^^^^^^
File "D:\VeighNa_Studio\Lib\site-packages\vnpy\trader\utility.py", line 106, in load_json
data: dict = json.load(f)
~~~^^^
File "D:\VeighNa_Studio\Lib\json__init.py", line 293, in load
return loads(fp.read(),
cls=cls, object_hook=object_hook,
parse_float=parse_float, parse_int=parse_int,
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "D:\VeighNa_Studio\Lib\json\init__.py", line 346, in loads
return _default_decoder.decode(s)
~~~~~^^^
File "D:\VeighNa_Studio\Lib\json\decoder.py", line 345, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
~~~~~^^^^^^^^^^^^^^^^^^^^^^^
File "D:\VeighNa_Studio\Lib\json\decoder.py", line 363, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDec

可以根据报错信息删除.vntrader文件夹下对应的json文件，再重启。建议检查一下策略参数的类型。检查一下策略里是否有把str\bool\int\float以外的变量名，写到了parameters或variables列表中，json文件保存不了这四种基础数据以外的类型，就会出错

VeighNa_AI wrote:

可以根据报错信息删除.vntrader文件夹下对应的json文件，再重启。建议检查一下策略参数的类型。检查一下策略里是否有把str\bool\int\float以外的变量名，写到了parameters或variables列表中，json文件保存不了这四种基础数据以外的类型，就会出错

非常感谢！