报错内容：
Traceback (most recent call last):
File "C:\veighna_studio\lib\site-packages\vnpy\trader\ui\mainwindow.py", line 276, in open_widget
widget = widget_class(self.main_engine, self.event_engine)
File "C:\veighna_studio\lib\site-packages\vnpy_ctastrategy\ui\widget.py", line 41, in init
self.cta_engine.init_engine()
File "C:\veighna_studio\lib\site-packages\vnpy_ctastrategy\engine.py", line 118, in init_engine
self.load_strategy_data()
File "C:\veighna_studio\lib\site-packages\vnpy_ctastrategy\engine.py", line 835, in load_strategy_data
self.strategy_data = load_json(self.data_filename)
File "C:\veighna_studio\lib\site-packages\vnpy\trader\utility.py", line 105, in load_json
data: dict = json.load(f)
File "C:\veighna_studio\lib\json__init.py", line 293, in load
return loads(fp.read(),
File "C:\veighna_studio\lib\json\init__.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\veighna_studio\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\veighna_studio\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 6 column 17 (char 121)

可以复现，每次停止策略的时候就会报错，强制关闭之后模块就启动不了了，恢复方法是删除user目录下的配置缓存文件（不知道删哪个能解决反正全删了）

在文化财经里叫BARSLAST（x）
作用是上一次满足X条件到现在的K线根数.如果本根K线满足X条件，则BARSLAST（X)返回0。

本人py初学者，希望大佬能讲的细点或者有写过的分享一下，谢谢！

双击和右键管理员打开都没反应，是配置太低吗？
腾讯云2核2G轻量服务器
Windows server 2012R2