[Kivy] Unable to get a wiindow, abort

[antonmichel]

Hey Guys,
When I run my simple kivy application i have this error, I have tried many ways to fix it but it didn't work, anyone can help?

Thank you,

import kivy
kivy.require('1.0.6') # replace with your current kivy version !

from kivy.app import App
from kivy.uix.label import Label


class MyApp(App):

    def build(self):
        return Label(text='Hello world')


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

error :