What does the error message “Google Drive … Access Not Configured” mean?

Do your backups not reach Google Drive, and are you shown a message like the following? (Either in your dashboard, report, or in your log file):

This message means that when you set up your Google Drive access, you missed out step 2 of the setup instructions, “Activate the Drive API”. i.e. You did not configure the Drive API to be enabled in your Google account.

Enable it, and all should be well. Check the Google Drive setup instructions to see some screenshots and more information.