실습 실행 오류가 뜹니다.

npm start를 해도 오류가 뜨고 실행이 안됩니다.

제발 도와주세요ㅠㅠ

Failed to compile.

Module not found: Error: Can't resolve '.reportWebVitals' in 'C:\Users\ujin2\my-app\my-app\src'

ERROR in ./src/index.js 8:0-47

Module not found: Error: Can't resolve '.reportWebVitals' in 'C:\Users\ujin2\my-app\my-app\src'

ERROR in ./src/index.js 9:0-51

Module not found: Error: Can't resolve './chapter_05/CommentList' in 'C:\Users\ujin2\my-app\my-app\src'

webpack compiled with 2 errors