npm run build 하고
index.html 열면
Access to internal resource at 'file:///C:/Users/%EC%A0%95%EC%84%9D%EC%9A%B0/Desktop/CODING/react2/blog/shop/build/manifest.json' from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome-extension, edge, https, chrome-untrusted.
콘솔창에 이런 에러가 자꾸 떠요...