Github user ijokarumawak commented on the issue:
https://github.com/apache/nifi/pull/2631
In order to try the new 'export-flow-snapshots' command, you need to
checkout [NiFi Registry PR
112](https://github.com/apache/nifi-registry/pull/112) which is under review
phase for [NIFIREG-162](https://issues.apache.org/jira/browse/NIFIREG-162).---
