Beta Jun

@dpjayasekara Ok, thank you very much! What are the requirements for the program operating environment?I was running a new machine that I just configured, and I seem to have missed...

``` 1215 verbose stack Error: [email protected] install: `node-pre-gyp install --fallback-to-build` 1215 verbose stack Exit status 1 1215 verbose stack at EventEmitter. (D:\install\node\node-v10.16.3-win-x64\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16) 1215 verbose stack at EventEmitter.emit (events.js:198:13) 1215 verbose...

@dpjayasekara **I reinstalled C++ build tools for Windows --- `windows-build-tools`. Then `npm install` succeeded again, but there was an error in `npm start`. The error is : `missing script: start`**...