def convert[E, A](in: List[ValidatedNel[E, A]]): Ior[NonEmptyList[E], List[A]] =
    in.separate

could not find implicit value for parameter G: cats.Bifoldable[cats.data.ValidatedNel]
[error]     in.separate

def convert[E, A](in: List[ValidatedNel[E, A]]): Ior[NonEmptyList[E], List[A]] =
    in.traverse(_.toIor)

could not find implicit value for evidence parameter of type cats.Applicative[G]
[error]     in.traverse(_.toIor)