After upgrading robot version to 9.33, snmpcollector has stopped working. We have also tried to degrade the robot version back to version 9.32 but that is also not working.
Release : 20.3
Component : UIM - SNMPCOLLECTOR
There was a stale snmpcollector process. Killing the process resolved the issue.
As a best practice, please deactivate snmpcollector before hub or robot is upgraded