What can I do if I can't save in vs code & I can't submit things in vs code?

Question

On this morning when I open my vs code I found this suddenly pop out. I ignore it and start coding. Afterward I found that I can save my codes, so I code it in notepad and I save it to vs code using Nano in the terminal. It saved successfully. But it comes to the second issue, I can't handin my work it shows

bash: submit50: command not found



bash: style50: command not found



bash: check50: command not found

when I input check50 cs50/problems/2022/x/cash style50 cash.c check50 cs50/problems/2022/x/cash . The error I saw when I start the vs code is as follow:

This codespace is currently running in recovery mode due to a container error. Review the creation logs, update your devcontainer configuration as needed, and run the "Rebuild Container" command to retry.

After I click view creation log it shows the following things in the coding area.

2022-04-19 03:34:20.311Z: Configuration starting...
2022-04-19 03:34:20.440Z: Entering recovery mode after failing to start. Reason: System.Threading.Tasks.Task`1[System.String]
2022-04-19 03:34:20.461Z: Found a recovery marker flag. Validate the reason.
2022-04-19 03:34:20.477Z: Container creation failed.
2022-04-19 03:34:21.673Z: 
2022-04-19 03:34:21.737Z: Creating recovery container.

Please tell me what can I do to solve this issue. Thanks a lot.