localhost sent an invalid response. ERR_SSL_PROTOCOL_ERROR mac

It takes so long time to fix it.

I followed these one. but I think it doesn't work.
refer : https://kinsta.com/knowledgebase/err_ssl_protocol_error/

8 Things to Do When Experiencing ERR_SSL_PROTOCOL_ERROR:

1. Clear SSL State.
2. Verify SSL Certificate (DNS settings haven’t fully propagated yet).
3. Check the System Time and Date.
4. Clear Browser Cache and Cookies.
5. Disable Browser Extensions.
6. Update Browsers to Latest Version.
7. Update Your Operating System.
8. Temporarily disable Antivirus and Firewall (Sometimes these software might incorrectly block a secure connection).

이에러를 시작으로 또다른 에러가 나왔다

 git clone https://github.com/onniseonmi/im-sprint-shortly-mvc-reference.git
Cloning into 'im-sprint-shortly-mvc-reference'...
remote: 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.
fatal: unable to access 'https://github.com/onniseonmi/im-sprint-shortly-mvc-reference.git/': The requested URL returned error: 403

깃헙과 연결이 끊긴것이다 ㅡㅜ 으아아앙
요것 때문에 잠도 못자고 검색 끝에
ssh 원격 접속하기로 해결을 했다...

ssh키 저장

ssh-keygen

cd ~/.ssh
ls -la

cd ~/.ssh
cat id_rsa.pub

public key copy