Hi tomz,
that’s an interesting find and I can reproduce that. It seems as if mobilev2 is causing this by accessing the API endpoint GetGroupsByUser. There’s no mention in the docs that this endpoint requires a license now and I’m also absolutely unsure about why the error message is in German here. Anyways, it’s not a problem of your installation, this is something that has been there for quite some time now, but I can confirm this API call works when you have a license installed and on my system, it’s returning my LDAP and custom group memberships (both being enterprise features), so I think this is being caused by newer clients trying to request this information when olders didn’t.