【VScode】【Remote-SSH】サーバーに突然接続できなくなりました。

実現したいこと

VScodeを使用してサーバー内にあるファイルを直接編集をしたいです。

発生している問題・分からないこと

リモートホストは、glibc および libstdc++ の VS Code Server の前提条件を満たしていない可能性があります。とログが出力されますが改善策などはありますでしょうか？
Xserverのpublic.htmlなどの編集で突然接続できなくなった要因はわかりません。。。

該当のソースコード

[17:21:36.165] Resolver error: Error: VS Code Server を起動できませんでした
	at g.ServerInstallError (c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:460179)
	at d (c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:453522)
	at t.handleInstallOutput (c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:455792)
	at t.tryInstall (c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:581100)
	at async c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:540958
	at async t.withShowDetailsEvent (c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:544264)
	at async k (c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:537923)
	at async t.resolve (c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:541635)
	at async c:\Users\12900k\.vscode\extensions\ms-vscode-remote.remote-ssh-0.108.0\out\extension.js:2:807794
[17:21:36.167] ------




[17:21:36.272] > 
[17:21:37.454] "install" terminal command done
[17:21:37.454] User entered passphrase
[17:21:37.455] Passphrase was entered and ssh config entry was found - adding SSH key to agent
[17:21:37.455] Executing add-ssh-key:
powershell -ExecutionPolicy Bypass C:\Users\12900k\AppData\Local\Temp\vscode_add_ssh_key_to_agent.ps1
[17:21:37.456] Terminal shell path: C:\WINDOWS\System32\cmd.exe
[17:21:37.456] "add-ssh-key" wrote data to terminal: "powershell -ExecutionPolicy Bypass C:\Users\12900k\AppData\Local\Temp\vscode_add_ssh_key_to_agent.ps1"
[17:21:37.831] > Microsoft Windows [Version 10.0.22621.3007]
> (c) Microsoft Corporation. All rights reserved.C:\Users\12900k>]0;C:\WINDOWS\System32\cmd.exe
[17:21:37.846] > (powershell -ExecutionPolicy Bypass C:\Users\12900k\AppData\Local\Temp\vscode_add_ssh_key_to_agent.ps1) & exit /b 0
> ]0;C:\WINDOWS\System32\cmd.exe - powershell  -ExecutionPolicy Bypass C:\Users\12900k\AppData\Local\Temp\vscode_add_ssh_key_to_agent.ps1
[17:21:38.091] > PS: adding key to ssh-agent
> ssh-add
> C:\Users\12900k\keys\cozyclan.key
> Error connecting to agent: No such file or directory
> 8c1919424cf0##5##
[17:21:38.091] ssh-add failed
[17:21:38.091] Consider setting up the ssh agent: https://aka.ms/vscode-remote/troubleshooting#_setting-up-the-ssh-agent
[17:21:38.113] > ]0;C:\WINDOWS\System32\cmd.exe
[17:21:38.113] ssh-add failed
[17:21:38.113] Consider setting up the ssh agent: https://aka.ms/vscode-remote/troubleshooting#_setting-up-the-ssh-agent
[17:21:39.368] "add-ssh-key" terminal command done
[17:21:39.368] Install terminal quit with output: