create-react-app으로 프로젝트를 생성 후 yarn start를 입력하니 갑자기 에러가 발생했다. There might be a problem with the project dependency tree. It is likely not a bug in Create React App, but something you need to fix locally. The react-scripts package provided by Create React App requires a dependency: "webpack": "4.44.2" Don't try to install it manually: your package manager does it automatically. However, a differen..
