Permissions help with using action.forward token in an email

Question

I want to add a forward to a friend at the bottom of an email. When recipient clicks they see the "enter up to 5 email address" page however if they are a non-authenticated user they get a Undefined property error and a not authorized error. The email is sent correctly. Is there a way to send them to a public page and does anyone know what the Undefined property error is. Thanks

Civi 5.2.1 . on Drupal 7

Answer 1

Make sure you have 'access CiviMail subscribe/unsubscribe pages' permission set for anonymous user.