To repro:

1. Create new project on MacEditor;
2. Switch to macOS platform;
3. Switch to il2cpp scripting backend;
4. Enable "Generate Xcode project checkbox";
5. Build the project;
6. Open the generated project;
7. Build it.

When building the project, you get this error:

/Users/<username>/Library/Developer/Xcode/DerivedData/asd-exquyunycieeikgymwxxdomjpnpx/Build/Intermediates.noindex/asd.build/Debug/GameAssembly.build/Script-5DD64618871DEE1456320107.sh: line 3: : command not found

Command /bin/sh failed with exit code 127