Fixed hybrid task/command definition.
@@ -23,7 +23,7 @@ def sync_members():
@click.command('emails')
-@click.argument('user_id', metavar='<user_id>')
+@click.argument('user_id', metavar='<user_id>', nargs=1)
@with_appcontext
def sync_user_email_addresses(user_id):
"Sync email addresses for user"
