User blog comment:Spiderdog39/1.14.4 edition??/@comment-32992263-20190820180254

Unfortunatly, this mod is for version 1.12.2 at the latest, so it won't work if you play with version 1.14.4. I believe the FAA developers are working on fixing this, but for now, you can't play it with version 1.14.4.