Hola, ¿podrías ayudarme? soy novato utilizando python y encontré ese mismo vídeo pero cuando lo corro me parece lo siguiente en mi terminal :

[INFO   ] [Logger      ] Record log in C:\Users\joaquis\.kivy\logs\kivy_20-05-01_33.txt
[INFO   ] [deps        ] Successfully imported "kivy_deps.gstreamer" 0.2.0
[INFO   ] [deps        ] Successfully imported "kivy_deps.angle" 0.1.10
[INFO   ] [deps        ] Successfully imported "kivy_deps.glew" 0.2.0
[INFO   ] [deps        ] Successfully imported "kivy_deps.sdl2" 0.2.0
[INFO   ] [Kivy        ] v1.11.1
[INFO   ] [Kivy        ] Installed at "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\__init__.py"
[INFO   ] [Python      ] v3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)]
[INFO   ] [Python      ] Interpreter at "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\pythonw.exe"
[INFO   ] [Factory     ] 184 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO   ] [KivyMD      ] v0.104.1
[INFO   ] [Window      ] Provider: sdl2
[INFO   ] [GL          ] Using the "OpenGL" graphics system
[INFO   ] [GL          ] GLEW initialization succeeded
[INFO   ] [GL          ] Backend used <glew>
[INFO   ] [GL          ] OpenGL version <b'4.1.11161 Compatibility Profile Context'>
[INFO   ] [GL          ] OpenGL vendor <b'ATI Technologies Inc.'>
[INFO   ] [GL          ] OpenGL renderer <b'AMD Radeon(TM) HD 6480G     '>
[INFO   ] [GL          ] OpenGL parsed version: 4, 1
[INFO   ] [GL          ] Shading version <b'4.10'>
[INFO   ] [GL          ] Texture max size <16384>
[INFO   ] [GL          ] Texture max units <16>
[INFO   ] [Window      ] auto add sdl2 input provider
[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [GL          ] NPOT texture support is available
Traceback (most recent call last):
   File "C:/Users/joaquis/PycharmProjects/IDKPROYECTO/main.py", line 15, in <module>
     Main().run()
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\app.py", line 828, in run
     self.load_kv(filename=self.kv_file)
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\app.py", line 599, in load_kv
     root = Builder.load_file(rfilename)
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\lang\builder.py", line 301, in load_file
     return self.load_string(data, **kwargs)
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\lang\builder.py", line 405, in load_string
     rule_children=rule_children)
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\lang\builder.py", line 654, in _apply_rule
     child = cls(__no_builder=True)
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivymd\uix\navigationdrawer.py", line 516, in __init__
     super().__init__(**kwargs)
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivymd\uix\card.py", line 664, in __init__
     super().__init__(**kwargs)
   File "C:\Users\joaquis\AppData\Local\Programs\Python\Python37\lib\site-packages\kivymd\theming.py", line 896, in __init__
     "KivyMD: App object must be inherited from "
ValueError: KivyMD: App object must be inherited from `kivymd.app.MDApp`. See No tienes permitido ver los links. Registrarse o Entrar a mi cuenta

Process finished with exit code 1