The development server returned response error code: 500 - React Js

The development server returned response error code: 500

Guest Post :

I am facing "The development server returned response error code: 500" error after installing a package. I tried Uninstall that package, Change port 8081 to 8088, Recreated the project But no use. Please make suggestion how can I get rid of this error?

Users Please post your solution too.