When the user deletes a user that does not exist, the exception message "Student not found!" is shown, but the data update sucess command shows regardless. Afterwards, when attempting to use the restore command for a user that does not exist, an unhandled exception is thrown and the app crashes. This exception only occurs under these specific circumstances.

When the user deletes a user that does not exist, the exception message "Student not found!" is shown, but the data update sucess command shows regardless. Afterwards, when attempting to use the restore command for a user that does not exist, an unhandled exception is thrown and the app crashes. This exception only occurs under these specific circumstances.