adding exclude argument gives me exit status 65

[filipb00]

Running periphery scan without any arguments is successful, but if I add --report-exclude myProj/**/*example.swift it gives me

error: Shell command '/bin/sh -c xcodebuild -workspace 'Users/user/proj/ProjConsumer.xcworkspace' ... periphery scan myProjConsumer/exampleFolder/fileExample.swift returned exit code 65