We don't all want to upgrade. Many of us would stay on Mojave for awhile... a lot like how users stayed on Win95/98 for many years and in fact they are still used in some poorer countries. I saw several Win98 computers running in an orphanage library in Angola just 2 or 3 years ago. Mojave is my Win95. :D

This is one of the most amateur mistakes I've seen from Apple... and they've made a lot of amateurish mistakes!

This got me a little further, but now I'm stuck at getting the error "Unable to copy symbols from this device".