Error: Invalid value for 'BACKUP_PATH' - is not readable

Hi

I have reformatted my MacBook and installed MVT again, trying to scan an iOS backup. However I get this error - is not readable

Error: Invalid value for 'BACKUP_PATH': Path '/Users/user1/Library/Application Support/MobileSync/Backup/00008130-000275E42213803A' is not readable.

The folder name is correct. If I remove the last "A", I get an error "does not exist" so I believe mvt-ios can read the folder. But something else is wrong, any clues?

Did not have this issue before on the other Mac. Does mvt-ios need to be added to some macOS security settings etc?

Thanks