Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.

Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.
remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.

=> 패스워드에 자기 자신의 패스워드가 아닌 깃허브에서 발급한 깃허브 펄스널 토큰(personal access token)을 넣어주자.! 참고로 personal access token은 발급 후 한 번만 볼 수 있으므로 메모장 같은곳에 따로 저장해주자