Android Studio-- Cause: error=86, Bad CPU type in executable

Finally I solved this by a little change.

goto the error module and changed the buildToolsVersion to anther(bigger version) in build.gradle file.

rebuild again, the error disappeared.

ADB doesn't support ARM, it needs Rosetta to run. I fixed this issue by installing Rosetta. Open Terminal and run the following command:

softwareupdate --install-rosetta