ASCII decode problem

[Aledosim]

I'm trying to run a python3 app on android device. I think this issue is related to python versioning (unicode feature of python3 vs python2) and dont know if it is a Buildozer or Crystax issue. I have packaged it in the VM downloaded from Kivy website, following the installations instructions for python3 support on the readme of Buildozer's github page. The apk from a "hello world" app works fine.
It fails when I try to load a kv file thru the Builder.load_file method, raising a UnicodeDecodeError.

Here is the logcat "python:" ":S"
logfile.txt

Here is the buildozer.spec
buildozer.spec.txt

[Aledosim]

Since I dont know if it is a bug or a real issue, I have closed