[Question] SSH_MSG_REQUEST_FAILURE

### Question

I created a monitoring task using the Redhat monitoring template. After monitoring for a period of time, the system would report this error. No data could be collected, but the service did not crash. At this point, restarting hertzbeat would restore it. I would like to know why this problem occurred, from which aspects to investigate it, and how to solve it.
`2025-06-11 08:40:15 [sshd-SshClient[2d3eb2d3]-nio2-thread-8] DEBUG org.apache.sshd.client.session.ClientSessionImpl - doHandleMessage(ClientSessionImpl[root@/192.168.6.233:22]) process #630 SSH_MSG_REQUEST_FAILURE`

Start with the Redhat monitoring template and the logged org.apache.sshd ClientSessionImpl#doHandleMessage entry point. Investigate why SSH_MSG_REQUEST_FAILURE stops data collection without crashing the service and whether restarting HertzBeat only temporarily restores monitoring. Done means identifying the cause and documenting a verified resolution.

Written by the indexing model from the issue text.