Hi all, At the moment, we do have 2 versions of UI for Apache Airflow which is really hard to maintain. In an effort to remove the legacy UI, and make the FAB (RBAC UI) the default and only UI version of Apache Airflow, I've opened a PR, with all tests passing on Travis. PR: https://github.com/apache/incubator-airflow/pull/4339 Travis Build: https://travis-ci.org/apache/incubator-airflow/builds/469438619 Since it's a big change and really hard to keep it updated with the latest master all the time, can someone please help with the reviews? Best, *Verdan Mahmood*