Cloning a Macintosh HD w Disk Utiliy error OSStatus error 60
I am following the steps to create a clone out of my HD drive on a Mac mini late 2012 and, after all the waiting (6+ hours) I keep on getting an error message: Restore process has faile....Could not fix UUIDs fot APFS volumes in container/dev/disk4s1. The operation couldn't be completed. (OSStatus error 60) Operation failed.
I have highlited the External SSD, preformated same APFS as the Macintosh HD.
Thanks anyone in advance for your time to share some advise.
Mac mini, macOS 10.14