React
Uncaught Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up ..
리액트 오류: Uncaught Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.Check the render method of `Field`. Check the render method of `Field` 그런데 아무리 살펴봐도 나는 'Field' 라는 것을 쓰거나, 오타가 난..
