I am trying to set up Sonar Gerrit - Jenkins Plugin on a Jenkins job.
Context
a new version of sonar-gerrit plugin has been released. I'm sorry for the delay.
I can't completely fix the problem JENKINS-32851 right now as reasons of the exception may vary, but I have added an ability to see the RestAPIException stacktrace. See details in the project Wiki. Please let me know if it helps (or not) and what (was?) causing your problem. I feel like I have to add some possible reasons of the exception to the troubleshooting section of the project Wiki :)