VS CODE ISSUE

Is there anyone who can help with VS Code issue? I have access to a remote server. Last month I was able to access to this remote server through ssh. But today when I'm logging in I'm not able to access. I'm not able to understand the problem, it can be update of VS code or remote server or anything. If you have worked extensively on VS code and feel like you can solve it, then please apply it's just a 1 hour task max.