Kivy错误：[CRITICAL] [App]无法获得一个窗口，中止

Question

所有针对此Kivy错误的解决方案对我来说都不起作用。现在已经有2个星期了，但我所有的努力都是徒劳的。我使用python 3.6.4，kivy 1.10.1，pycharm作为我的IDE和Windows 10.这里是错误代码和代码本身：

代码：

from kivy.core.window import Window
import os
os.environ['KIVY_GL_BACKEND'] = 'angel_sdl2'
from kivy.app import App
from kivy.uix.button import Button

# from kivy import Config
# Config.set('graphics', 'multisamples', '0')

class MyApp(App):
  def build(self):
     return Button(text='Hello world')


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

错误：

enter code here"C:\Program Files\Python36-32\python.exe" 
"C:/Users/Sabinus O Ofoleta/Desktop/python/tested.py"
[INFO   ] [Logger      ] Record log in C:\Users\Sabinus O    Ofoleta\.kivy\logs\kivy_19-02-21_4.txt
[INFO   ] [Kivy        ] v1.10.1
 [INFO   ] [Python      ] v3.6.7 (v3.6.7:6ec5cf24b7, Oct      20 2018, 12:45:02) [MSC v.1900 32 bit (Intel)]
 [INFO   ] [Factory     ] 194 symbols loaded
 [INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
 [INFO   ] [Text        ] Provider: sdl2
 [INFO   ] [Window      ] Provider: sdl2
 [INFO   ] [Window      ] Activate GLES2/ANGLE context
 [CRITICAL] [Window      ] Unable to find any valuable  Window provider.
 sdl2 - RuntimeError: b'Could not initialize EGL'
 File "C:\Program Files\Python36-32\Lib\site-packages   \kivy\core\__init__.py", line 67, in core_select_lib
  cls = cls()
 File "C:\Program Files\Python36-32\Lib\site-packages \kivy\core\window\window_sdl2.py", line 140, in __init__
super(WindowSDL, self).__init__()
 File "C:\Program Files\Python36-32\Lib\site-packages\kivy\core\window\__init__.py", line 968, in __init__
self.create_window()
 File "C:\Program Files\Python36-32\Lib\site-packages\kivy\core\window\window_sdl2.py", line 272, in create_window
self.fullscreen,resizable , state)
 File "kivy\core\window\_window_sdl2.pyx", line 209, in kivy.core.window._window_sdl2._WindowSDL2Storage.setup_window
 File "kivy\core\window\_window_sdl2.pyx", line 66, in kivy.core.window._window_sdl2._WindowSDL2Storage.die

 [CRITICAL] [App         ] Unable to get a Window, abort.

 Process finished with exit code 1

我的电脑正在使用opengl 1.1，因为其他版本不兼容所以我决定使用'angel sdl2'。谢谢