When I configure the TestResultAggegator using a url with https and then hit Test Connection, I receive a 401 error message.  See below:

Example configured URL:  https://xxxxxx/yyy.zzz.com/jenkins

Error Occurred: Server returned HTTP response code: 401 for URL: https://xxxxxx/yyy.zzz.com/jenkins/api/json

If I type the URL that is in the error code into my browser, the page JSON page is displayed.  Not sure why it isn't working when I hit Test Connection.

I've provided an API login and password token created from my Jenkins account, but it still fails to connect to the Jenkins server.