INTEGRATOR...
npm start or npm run webpack: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 error logs, you will probably have the cause of the error.If you want to go fast, run ./mvnw 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 webpack:build or npm start./mvnw or using your IDE