SyntaxError: Unexpected token when using react-script test

Environment I created my project by create-react-app, and running test using its react-script test. node version: 10.15.3 npm version: 6.4.1 react-scripts: 3.0.1 What happened? When running test command (npm run test), I got this error message:

error: could not install smartsocket listener: Address already in use

This article is about error message: “error: could not install smartsocket listener: Address already in use”. I like to flash my android smartphone. As we all know, there are (at lease) two tools we could use when flashing phones: adb and fastboot. But I met a problem when I try to run new adb server,…