Just put the number on the subject ID. Just -4.
No need to put "ID -4"
If you changed the "ID -4" what you pit on it instead?
I guess this error, and the others, you can better understand them and the plugin itself taking a look at the sample project (the link is on the plugin page).
There you will be able to get a working example and see how things are done.
If still, you get into trouble, add me on discord: hakuenstudio