This is mentioned in the SRM 5.1.2 release notes as a known issue:
Logging out of the SRM C# client during reprotect causes the sync step of a reprotect operation to fail with the error Error getting local VC view.
During reprotect, after configuring replications in the reverse direction, SRM and the vSphere Replication appliance wait for the initial syncs to complete in the reverse direction. SRM triggers a separate sync operation to verify that there are no issues with the replication. If you log out of the SRM UI during this sync operation, the reprotect operation continues, but the vSphere Replication cannot impersonate the user and the sync operation fails.
Workaround: Ignore the error shown in the sync step of the reprotect workflow, or use the SRM UI to manually trigger a sync after the reprotect is complete.