can't be installed on untitled OS X version 10.14 or later is required
(null) can't be installed on untitled OS X version 10.14 or later is required.
I got this message when I try to download something.
MacBook Air 13″, OS X 10.10
Question marked as
Top-ranking reply
That means in order to install (null) on "untitled" you have to upgrade your Mac to Mojave 10.14 if your Mac is compatible.