'Checking (null)' during mac OS update
Had to reformat my 2017 Macbook Pro. That re-installed High Sierra. Update to Mojave worked fine as well. Now trying to go to Catalina (or Big Sur) i get a checking (null) error and the installer essentially freezes here.
I have spoken with multiple support reps and tried all of the recommended fixes.
Has anyone found a workaround or fix to this issue? Seeing multiple threads open that haven't been solved.
MacBook Pro 13″, macOS 10.14