Pre-check is failing when trying to add additional hosts.
Symptoms:
You will see the following error in the Pre-check
Remediation should be followed to validate that there are no issues accessing the /locker.
/opt/vmware/sddc-support/sos --health-check
or run the VDT tool for VCF Using the VCF Diagnostic Tool for vSphere (VDT)Impact/Risks:
Impact: High. Do not perform upgrade without addressing this issue.