The view in the right side shows that my code worked out, but I keep getting the error. Is it a bug?
EDIT: It seems that the code doesn't work when you create a new module and a new controller, although it's "suggested" in "Learn" (but not in Instructions). I don't know if it's possible to fix it or it's not necessary, but I could use the same model and controller given in the exercise, so it's a bit my fault, sorry. Anyway, I leave here a suggestion of improvement.