SFTP CLI works but PutSFTP fails

[#1]

We have VM server on which we have NiFi installed within the container.

When we try to connect using sftp command from within the docker it connects fine.

docker exec -it nifi bash

However when we try from NiFi PutSFTP processor, it fails with below error

Routing to failure since unable to transfer FlowFile[filename=TGT_TEST28042026.csv] to remote host sftp.AAAAA.com:
net. schmizz. sshj. transport. TransportException: Connection reset
- Caused by: java.net.SocketException: Connection

How and where do I get more details logs ?

Also, is sftp command and NiFi PutSFTP works differently ?

This is similar to my previous  post

https://community.cloudera.com/t5/Support-Questions/SFTP-CLI-works-but-PutSFTP-fails/td-p/413903

But this time vendor has whitelisted the IP and we are able to connect from within docker on which Nifi is running.

Thanks

Gautam P