After being without a Mac for nearly 2 years, I have installed a new system (Big Sur) and downloaded Xcode 12, a great leap forward from the Xcode 9 that I was running on the Mac that died. Now I try to revive a project from 2017. I'm trying to adjust the settings to use a new and appropriate target OS. Following all the documentation I can find online, I would expect to see settings look something like this:
But all I can get is some sort of raw code that looks like this. What am I doing wrong, and is there a way to fix it and get the proper settings view back?