Import Virtual Networks from vCenter

I am new to this platform and I am on first installation.
I tried to connect OpenNebula to our VMware Cluster, no problem with cluster and Datastore IMPORT.
Iā€™m having trouble importing vcenter networks.
Pressing GetNetwork gives me this error:
undefined method `portgroup 'for nil: NilClass :scream: :scream: :scream:
Nebula version vcenter version 6.7.0 build 14368027
Thanks so much for your help :slightly_smiling_face: