python Kivy SDL2报错: Unable to load image

python Kivy SDL2报错: Unable to load image

国内玩kivy的真的很少，教程也少。
断断续续弄了两天，终于弄好了
首先看一下我的报错

[INFO   ] [Logger      ] Record log in C:\Users\AlucaRd\.kivy\logs\kivy_20-12-15_11.txt
[INFO   ] [deps        ] Successfully imported "kivy_deps.gstreamer" 0.3.1
[INFO   ] [deps        ] Successfully imported "kivy_deps.angle" 0.3.0
[INFO   ] [deps        ] Successfully imported "kivy_deps.glew" 0.3.0
[INFO   ] [deps        ] Successfully imported "kivy_deps.sdl2" 0.3.1
[INFO   ] [Kivy        ] v2.0.0
[INFO   ] [Kivy        ] Installed at "C:\Users\AlucaRd\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\__init__.py"
[INFO   ] [Python      ] v3.7.4 (tags/v3.7.4:e09359112e, Jul  8 2019, 20:34:20) [MSC v