npm start or
npm run webapp:build.
npm install. If you are behind a corporate proxy, it is
likely that this error was caused by your proxy. Have a look at the ImSmart error logs, you will probably find the cause.
If you want to go fast, run ./gradlew to build and run everything.
If you want to have more control, so you can debug your issue more easily, you should follow the following steps:
npm installnpm run webapp:build or
npm start
./gradlew or using your IDECheck the ImSmart project repository for documentation and support.