Github user apiri commented on the issue:
https://github.com/apache/nifi/pull/1550
Started looking at this a bit and still testing, but it appears that if an
interface is not specified, it causes a validation error.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
