Apart from the advice above, I'd check all of the disks and any place that the backup file sat for any period of time to make sure that you aren't seeing a sign of hardware failure. Probably overkill, but last thing you want to find out is that the disk/tape/cloud provider/whatever holding your backups has failed.
The above is all just my opinion on what you should do.
As with all advice you find on a random internet forum - you shouldn't blindly follow it. Always test on a test server to see if there is negative side effects before making changes to live!
I recommend you NEVER run "random code" you found online on any system you care about UNLESS you understand and can verify the code OR you don't care if the code trashes your system.