Hey Tomás,
Check your parens: (for-each (make-file-writable (find-files "\\.yml$"))) Should be (for-each make-file-writable (find-files "\\.yml$")) That’s because for-each is a higher order function which takes a procedure and a list. Good luck! - John > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
