Same problem. Download all the 2020 SDK and Python Bindings didn't worked out for me. But after I installed the 2019.5 SDK (Clang) and 2019.5 Python Bindings, I was able to get it running. macOS Big Sur 11.4 beta (20F5046g)

Same Issue on Xcode 15.4 and the las version for IOS, WatchOS and MacOS.