If it doesn't work for no reason, it's definitely a permission issue - like timeout
SSH files
SSH file Notion
ssh returns "Bad owner or permissions on ~/.ssh/config"
If on Windows Subsystem for Linux (WSL) and you pointed your WSL home directory to your Windows home directory (not recommended!) then chmod has no effect. Before you can chmod the files mentioned in other answers you must add [automount] options = "metadata" to your /etc/wsl.conf then restart WSL (requires build 17093 or later).
https://serverfault.com/questions/253313/ssh-returns-bad-owner-or-permissions-on-ssh-config
rangyu/TIL
오늘 내가 배운 것 (Today I Learned). Contribute to rangyu/TIL development by creating an account on GitHub.
https://github.com/rangyu/TIL/blob/master/ubuntu/SSH-%EB%A1%9C%EA%B7%B8%EC%9D%B8-%EC%A0%91%EC%86%8D-%EC%8B%9C-%ED%8D%BC%EB%AF%B8%EC%85%98-%EB%AC%B8%EC%A0%9C-UNPROTECTED-PRIVATE-KEY-FILE.md

Seonglae Cho