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 You are not allowed to view links. You are not allowed to view links. Register or Login or You are not allowed to view links. Register or Login

Process finished with exit code 1