Error message when trying to download Big Sur
I have a MBPro, 13", mid-2014. Am running Mojave. Am trying to upgrade to Big Sur. I am getting an error message when I try to download an update from the Software Update utility - either when I try Big Sur (from the Apple website), or when I try Catalina (which is the default it brings up in the Software Update utility.). In either case, I get an error message when I try to start the download of the OS package.
MacBook Pro 13″, macOS 11.0