ApacheNifi HttpInvoke java.lang.IllegalStateException: closed Error

@pankajgaikwad 

while it is wonderful that you have shared your InvokeHTTP processor configurations, I don't think enough information has been provided to provide assistance here.  All we know from you post is that some Post rest-api call was made against some service endpoint using some URL, to send form data of some content-type to which an illegal state exception was thrown.

Sharing details about your use case is always helpful. 

1. What is the target endpoint service (Polarion? which community members may not be familiar with)? 
2. What is the full rest-api call you are trying to make?
3. Were you able to successfully make that same rest-api call via curl local to the NiFi server?
4. What is the structure of your NiFi FlowFile (what is in the FlowFile's content and what are the FlowFile's attributes when the FlowFile reaches the InvokeHTTOP processor)?
5. What are the complete configurations of the invokeHTTP processor? (Some property values are cut-off in your images)
6. What documentation are you following for this rest-api call?

As far as the exception goes...

1. Was the "java.lang.IllegalStateException: closed" accompanied by any stack trace in the the nifi-app.log?
2. What was logged within the target service when this post request was made?

I see you shared your full dataflow in another community post:

An example of the original file you are obtaining via "GetFile", what attributes you are adding to the FlowFile, and how you are modifying that content before the InvokeHTTP may also be helpful here.

Sharing the additional input and details may make it possible for someone in the community to provide you with some suggestions and solutions.

Thank you,
Matt