A number of people have had issues with Hipmost, the command-line tool for migrating Hipchat data to Mattermost. Initially, the discussion of this topic was done on this thread, but I have hit my limit for replies as a new user. So I guess we are going to migrate discussion here.
Also, please feel free to use our issue tracker which may be better to use than posting here. I cannot post links to Github right now since I am a new user, but you can just head to
github dot com slash orbitalimpact slash hipmost, go to the
Issues tab and click
New issue. Thank you.