Hi @Osama Mansoor ,
The ClusterStorage folder has very limited permissions, as the error states you don't have access to export to that folder.
If I were you I would power down the VM and copy it to \ClusterNode\c$\ClusterStorage\CSVVolume and then import in Hyper-V locally (register) and use Failover Cluster Manager to cluster enable after that. If the copying also fails on permission errors you'll need to add permissions for yourself to the ClusterStorage folder.
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Best regards,
Leon