Thank you for your response.  Both vSphere Client and vCenter server versions are 6.7.  Java version is 1.8. Our plugin seems to be functioning fine, no noticeable regressions at this point in our testing.

Am I correct in saying that there is an initial error that is causing vCenter to attempt to connect to vcsa.vmware.com to upload the error message/logs and this is the error that I've reported?  If so, where would I find the initial/root error?  Our test systems don't have connectivity to the internet and therefore can't resolve vcsa.vmware.com.  Is there a way to disable this upload service?