The AppyBuilder sources are not open source AFAIK. An earlier version was released under the Affero GNU Public License (AGPL). Based on your posts here, I don't believe that you are complying with the terms of the AGPL, and we can't help with those sources because they are not App Inventor.
10 Likes
Actually, I found the code on GitHub
The sources you found are most likely forks from the original sources which are no longer available. These forks are outdated and may not have the updated licence.
Please see the "AppyBuilder Source Code" section here for more info:
5 Likes