could not encode class bundle

[git.vb]

Hi all,

Why is so difficult to make a simple android app?

Why I get every time this error? What I need? To download all source
code and debug it by myself? Why who did this message "could not encode
class bundle" was not thinking to set a more useful message?

Current environment:
Win 7-64
Java 1.7_80 (32/64)
Android SDK full installed
Android device 4.1
Virtual devices.
Environment variables already set

Thank you.

 ps.: I'm not a newcomer in development.