Fix error message displaying

Converted from `puts` to `error` for red text, forgetting that `error`
only takes a single argument.

Change-Id: Id9454c960ce6905a4eaab066fc12ad64bfb5c519
Reviewed-on: https://gerrit.causes.com/22845
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Aiden Scandella <aiden@causes.com>