macOS Big Sur Startup Error - "Backup and Restore has Encountered a Fatal Error"
OK solved it! I wish Google named the application a little differently e.g. &quot;Google Backup&quot; instead of &quot;Backup and Sync from Google&quot; - compact naming.

Identify where the application is i.e. Applications folder

Delete the application and restart Mac - SUCCESS, no more error!

Now, google for Google Drive application and download the individual version. It's smart enough to know that your OS is Mac and will push the correct installer for you.

Run it, install it, and check from Finder that Google Drive is visible.


All done and working in Big Sur now!