[ERROR] React: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined.
이번에 한번 프로젝트를 create-react-app 으로 시작해서 진행해볼까.. 하고 시작하는데 갑자기 날 멘붕하게 한 이 에러 메시지.
Uncaught Invariant Violation: Minified React error #130; visit http://facebook.github.io/react/docs/error-decoder.html?invariant=130&args[]=undefined&args[]= for the full message or use the non-minified dev environment for full errors and additional…