I'm studying c language with xcode. I only typed #include <stdio.h> and an error appeared. Could not build module 'Darwin' I can't find anywhere to solve this problem. I already reinstalled xcode but same error appears. please help me with this trouble. I created command line tools with c. These are versions of os and app. macOS catalina 10.15.7 and xcode 12.1

I'm studying c language with xcode. I only typed #include <stdio.h> and an error appeared. Could not build module 'Darwin' I can't find anywhere to solve this problem. I already reinstalled xcode but same error appears. please help me with this trouble. These are versions of os and app. macOS catalina 10.15.7 and xcode 12.1