I tried to set up the Fire App Builder to build a Fire TV app, but I got one Gradle error after another. I finally gave up and built it using the Leanback library. I noticed that the Fire App Builder repository hasn't been updated in over 3 years. Neither has any of the documentation on it. Has this been abandoned by Amazon? If so, why are they still promoting it? It looks pretty abandoned to me. From what I can tell, the Fire App Builder is useless today. I couldn't even get started with it. And I found others who ran into the same issues, so it's not just me.