Has the requirement for the allowed packages been respected? (Reminder for this project: only standard packages)
Try to export the file.
Does the exported file matches the output?
Try to open and change the exported file.
Are the exported files read and write for the user?
Does the project use the HTTP header Content-Type to indicate the media type of the resource?
Does the project use the HTTP header Content-Length to indicate the size of the entity-body, in bytes, sent to the recipient?
Does the project use the HTTP header Content-Disposition to download the files?
Does the site has a clear button/link to download/export the file?
As an auditor, is this project up to every standard? If not, why are you failing the project?(Empty Work, Incomplete Work, Invalid compilation, Cheating, Crashing, Leaks)