VASA Self-Signed Certificate AND VVOLs

Hi All,

I have Dell EMC Unisphere UnityVSA 5.0. I have setup VVOLs. Upon adding VVOL to  ESXi 6.5 U1 hosts, inside vvold, it says that there are issues with the certificate "self signed certificate in certificate chain, using default".

After wards, ESXi hosts throws an error that "vSphere HA failed to create a configuration vVol for this datastore and so will not be able to protect virtual machines on the datastore until the problem is resolved. Error: Operation failed, diagnostics report: Failed to create directory .vSphere-HA (Cannot Create File)"

here are errors showing up in the vvold.log file when trying to add vvold..

Do we have any KB article about adding self-signed VASA certificate to ESXi CA store?

Thanks