I FINALLY FIXED IT AFTER 3 DAYS! Ok, so it was indeed because my two java classes were in a default package. So to fix that, since my classes were being accessed via a different package, I created a new package that was my app (com.example.awesomefilebuilderwidget) and then moved the classes into there and now it works with no problemos! :DD Thanks for all you've done I really do apperciate it! – user1628978