Changing Snapshot location of a VM form iSCSI to NFS (AWS efs) mounted as a DataStore on ESXi 6.7

Hi VMWare Experts,

I am trying to change the datastore used to create VM snapshots for a couple of VMs running on ESXi 6.7. When I follow the instruction here to change the workingDir to a new subfolder under the current VM path (A), it works. However, when I changed the workingDir to the path on mounted NFS datastore (B), the VM does not start.

Could you please ping me with your advice?

The vmx settings are like bellow:

# (A) ===> Works (VM Starts with no problem and writes the snapshots in this path)

workingDir = "/vmfs/volumes/5d71d37b-20845e22-be37-000c29a047bd/Ubuntu-PACS-Server-01/snapshots"

snapshot.redoNotWithParent = "true"

# (B) ===> Does not Work (VM does not start and I recieve the error message in the screenshot.), the NFS is cloud based (AWS EFS).