In order to sort out your issue, could you explain further about the concern that you are having now? Including the following:
1. How did you
transfer the files? Were you trying to download the file from virtual machine instance in the Google Cloud Platform to any other environment?
2. How did you
access your virtual machine instance?
3. Looks like you don't have enough permission for that file. Have you checked the
permission that you are having on that particular file?