github speechless question, Host does not existfatal: Could not read from remote repository.

Unable to open connection:
Host does not existfatal: Could not read from remote repository.

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Please make sure you have the correct access rights
and the repository exists.

If there is a problem with github desktop, git pull and git clone, the problem lies in the router or dns. The
ping in cmd is different, but it is useless to set cmd proxy or git proxy, that is, cmdgit clone Prompt that the host cannot be accessed.
Later, I got the hang of it again, so I thought that I would just take a network card and connect it to the main router wifi to see
if it worked.

Since I am a bypass router network, I have not found a way how to set up the gateway without bugs. The main purpose is to let the bypass router go through some logic and then forward it to my computer without affecting the main router. Obviously, there is something wrong now, unless the network Isolation, the bypass route and the main route are not in the same network segment, but obviously I can't do this. I am doing industrial control machine networking, and I need the public network to access the ip port of the bypass route through the main route.

The error message of github desktop
Authentication failed. Some common reasons include:

• You are not logged in to your account: see File > Options.
• You may need to log out and log back in to refresh your token.
• You do not have permission to access this repository.
• The repository is archived on GitHub. Check the repository settings to confirm you are still permitted to push commits.
• If you use SSH authentication, check that your key is added to the ssh-agent and associated with your account.
• If you use SSH authentication, ensure the host key verification passes for your repository hosting service.
• If you used username / password authentication, you might need to use a Personal Access Token instead of your account password. Check the documentation of your repository hosting service.

Others: https://www.githubstatus.com/
windows user/
.ssh

Host github.com
  Hostname ssh.github.com
  Port 443
  User git

Check if git.config is configured with other proxy