Cannot deploy kivy app with RstDocument

Question

I have a problem deploying a Kivy application using RstDocument. It works fine on PC. I can deploy it if I use Label instead of RstDocument, but it stops in the latter case.

import kivy
from kivy.app import App
from kivy.uix.screenmanager import Screen

import configparser

class MainFrame(Screen):
    def __init__(self, **kwargs):
        super(MainFrame, self).__init__(**kwargs)
        pass

    def on_quit_button_click(self):
        quit()


class BasicApp(App):
    def build(self):
        return MainFrame()
        pass

if __name__ == '__main__':
    BasicApp().run()

with the following basic.kv

<MainFrame>:
    BoxLayout:
        RstDocument:
        #Label:
            text: 'Hello *world*!'
        Button:
            text: 'Click to quit'
            on_press: root.on_quit_button_click()

Nothing significant in logcat, just

 WindowManager: finishDrawingWindow: Window{bf4383ed0 u0 Application Error: testrstdocument.testrstdocument} mDrawState=HAS_DRAWN

Answer 1

Buildozer.spec

I am able to run a Kivy App with rstDocument on an Acer Android tablet by adding docutils into buildozer's requirement.

requirements = kivy, configparser, docutils