I use this command:
Set-SPOSiteGroup -Site htt.....com -Identity newgroup -Owner newgroup2
(newgroup is a Sharepoint group, newgroup2 is another sharepoint group)
Powershell responds with this: Set-SPOSiteGroup: The user newgroup2 was not found.
What is wrong with my command? I am sure newgroup2 exists, and i am able to make it the owner of newgroup using the sharepoint interface.