使用Windows电脑进行真机运行，根目录下添加了config.json文件，内容如下： { "project_path": "C:\\Users\\wb.chenchunzhi20\\Desktop\\小程序测试包\\测试环境\\V4.2.1测试", "dev_tool_path": "C:\\Program Files (x86)\\Tencent\\微信web开发者工具\\.cli.bat", "platform": "Android" } first.test.py文件中的代码如下： import minium # mini = minium.Minium({ # # 小程序项目目录地址,这里是Windows系统的目录 # "project_path": "C:\\Users\\wb.chenchunzhi20\\Desktop\\小程序测试包\\测试环境\\V4.2.1测试", # # 开发者工具cli地址，Windows系统就是默认这个路径 # "dev_tool_path": "C:\\Program Files (x86)\\Tencent\\微信web开发者工具\\cli.bat", # "platform": "Android" # # }) import minium class ExceptionTest(minium.MiniTest): def test_get_current_page(self): self.page.get_element('view', inner_text='加入').click() if __name__ == '__main__': ExceptionTest().test_get_current_page(） 运行first_test.py无法调用微信开发者工具，报错内容如下： Traceback (most recent call last):   File "<input>", line 1, in <module>   File "C:\Program Files\JetBrains\PyCharm Community Edition 2021.1.1\plugins\python-ce\helpers\pydev\_pydev_bundle\pydev_umd.py", line 197, in runfile     pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script   File "C:\Program Files\JetBrains\PyCharm Community Edition 2021.1.1\plugins\python-ce\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile     exec(compile(contents+"\n", file, 'exec'), glob, loc)   File "C:/Users/wb.chenchunzhi20/Desktop/UI自动化/小程序自动化/wechatDemo序自动化/wechatDemo/test/first_test.py", line 22, in <module>     ExceptionTest().test_get_current_page()   File "C:/Users/wb.chenchunzhi20/Desktop/UI自动化/小程序自动化/wechatDemo序自动化/wechatDemo/test/first_test.py", line 18, in test_get_current_page     self.page.get_element('view', inner_text='加入').click()   File "D:\Python3\lib\site-packages\minium-1.0.6-py3.9.egg\minium\framework\assertbase.py", line 346, in __getattribute__     attr = super().__getattribute__(item)   File "D:\Python3\lib\site-packages\minium-1.0.6-py3.9.egg\minium\framework\minitest.py", line 656, in page     return self.mini.app.get_current_page() AttributeError: 'NoneType' object has no attribute 'app' 将first.test.py上边注释掉的内容打开后，可以正常真机运行，但是依旧会报以下错误： received async msg: 9dfd40ee-6d1c-4ecf-b234-e7634084aada Traceback (most recent call last):   File "<input>", line 1, in <module>   File "C:\Program Files\JetBrains\PyCharm Community Edition 2021.1.1\plugins\python-ce\helpers\pydev\_pydev_bundle\pydev_umd.py", line 197, in runfile     pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script   File "C:\Program Files\JetBrains\PyCharm Community Edition 2021.1.1\plugins\python-ce\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile     exec(compile(contents+"\n", file, 'exec'), glob, loc)   File "C:/Users/wb.chenchunzhi20/Desktop/UI自动化/小程序自动化/wechatDemo序自动化/wechatDemo/test/first_test.py", line 22, in <module>     ExceptionTest().test_get_current_page()   File "C:/Users/wb.chenchunzhi20/Desktop/UI自动化/小程序自动化/wechatDemo序自动化/wechatDemo/test/first_test.py", line 18, in test_get_current_page     self.page.get_element('view', inner_text='加入').click()   File "D:\Python3\lib\site-packages\minium-1.0.6-py3.9.egg\minium\framework\assertbase.py", line 346, in __getattribute__     attr = super().__getattribute__(item)   File "D:\Python3\lib\site-packages\minium-1.0.6-py3.9.egg\minium\framework\minitest.py", line 656, in page     return self.mini.app.get_current_page() AttributeError: 'NoneType' object has no attribute 'app' 这种情况下我想问以下问题： 1.config.json文件如何生效？ 2.'NoneType' object has no attribute 'app'这个问题怎么解决？