samba - May 2017 - samba-tool cannot add or remove group members

samba-tool group addmembers domaingroup user1
ERROR(exception): Failed to add members "user1" to group
"domaingroup" - Unable to find "user1". Operation cancelled.

samba-tool group addmembers localgroup user1
ERROR(exception): Failed to add members "user1" to group
"localgroup" - Unable to find group "localgroup"

On Tue, 30 May 2017 06:44:37 +0200 (CEST)
Sébastien QUESSON via samba <samba at lists.samba.org> wrote:
> 
> samba-tool group addmembers domaingroup user1
> ERROR(exception): Failed to add members "user1" to group
> "domaingroup" - Unable to find "user1". Operation
cancelled.
> 
> samba-tool group addmembers localgroup user1
> ERROR(exception): Failed to add members "user1" to group
"localgroup"
> - Unable to find group "localgroup"
> 
> 
> 
Do you have users in /etc/passwd ?
If so, are you trying to add one of these users to an AD group ?

Rowland

> Do you have users in /etc/passwd ?
I only have original debian system users
> If so, are you trying to add one of these users to an AD group ?
no