Is it possible to use NiFi without Web UI because NiFi is not connected in Web UI it already posted in our community
https://community.hortonworks.com/questions/36177/not-able-to-access-nifi-web-ui.html. can you help me out anybody.
It is possible to use NiFi without the Web UI via the APIs. This is how the Web UI interacts with the application as well. However, it appears your actual question is about diagnosing an issue with the running application, which you will need to resolve in order to use the application, regardless of the mechanism of interaction, Web UI or API. Please post the application logs on the original question to help people in diagnosing the issue.