Check if there are tasks to cancel or join. It's an error to join nothing (#7422)
Check if there are tasks to cancel or join. It's an error to join nothing (#7422)


keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client