I cannot invite @jirabot to my slack channel: A valid member name is required.

[Zahra]

I tried to invite @Jirabot to my slack channel.  This error is displayed: a valid member name is required. It seems that jirabot is not active! 

[Aaron Williams]

The Jira bot is just @Integration Team - give that a try, and if that's not working it's likely the integration hasn't been enabled by the slack admins (from the Slack marketplace, you can usually request it if you are not Slack admin)