Mattermost CLI crash with - invalid memory address or nil pointer dereference

My organization is running GitLab Community 9.0 using the integrated Mattermost and have the same problem (not being able to delete teams using the cli).

I was creating nested groups in GL 9.0 and there is a checkbox to automatically create an associated Mattermost team. I'd like to delete these teams.

Any response on this issue from @jasonblais?