A lot of us are having issues with the new macOS update All models broken after MacOS Sequoia update. A few workaround were proposed here: Environment not working anymore on macos.
Maybe I was lucky. I only updated my Xcode to version 15.4 and I don’t need to manually setting the clang++ path in Python file. Here was what I did: Environment not working anymore on macos - #21 by Duc_Quang_Nguyen
Otherwise, it seemed for anyone else updated macOS (and Xcode to 16.0), setting clang++ path is the solution