[INFO   ] [Logger      ] Record log in C:\Users\dongf\.kivy\logs\kivy_21-03-14_59.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\dongf\kivy_venv\lib\site-packages\kivy\__init__.py"
[INFO   ] [Python      ] v3.9.2 (tags/v3.9.2:1a79785, Feb 19 2021, 13:44:55) [MSC v.1928 64 bit (AMD64)]
[INFO   ] [Python      ] Interpreter at "C:\Users\dongf\kivy_venv\Scripts\python.exe"
[INFO   ] [Factory     ] 186 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil (img_ffpyplayer ignored)
[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'4.6.0 NVIDIA 461.72'>
[INFO   ] [GL          ] OpenGL vendor <b'NVIDIA Corporation'>
[INFO   ] [GL          ] OpenGL renderer <b'GeForce RTX 2080/PCIe/SSE2'>
[INFO   ] [GL          ] OpenGL parsed version: 4, 6
[INFO   ] [GL          ] Shading version <b'4.60 NVIDIA'>
[INFO   ] [GL          ] Texture max size <32768>
[INFO   ] [GL          ] Texture max units <32>
[INFO   ] [Window      ] auto add sdl2 input provider
[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [Base        ] Start application main loop
[INFO   ] [GL          ] NPOT texture support is available
[ERROR  ] unable to access to <\hiberfil.sys>
Traceback (most recent call last):
  File "C:\Users\dongf\kivy_venv\lib\site-packages\kivy\uix\filechooser.py", line 180, in is_hidden
    return GetFileAttributesExW(fn)[0] & FILE_ATTRIBUTE_HIDDEN
pywintypes.error: (32, 'GetFileAttributesEx', 'The process cannot access the file because it is being used by another process.')
[ERROR  ] unable to access to <\pagefile.sys>
Traceback (most recent call last):
  File "C:\Users\dongf\kivy_venv\lib\site-packages\kivy\uix\filechooser.py", line 180, in is_hidden
    return GetFileAttributesExW(fn)[0] & FILE_ATTRIBUTE_HIDDEN
pywintypes.error: (32, 'GetFileAttributesEx', 'The process cannot access the file because it is being used by another process.')
[ERROR  ] unable to access to <\swapfile.sys>
Traceback (most recent call last):
  File "C:\Users\dongf\kivy_venv\lib\site-packages\kivy\uix\filechooser.py", line 180, in is_hidden
    return GetFileAttributesExW(fn)[0] & FILE_ATTRIBUTE_HIDDEN
pywintypes.error: (32, 'GetFileAttributesEx', 'The process cannot access the file because it is being used by another process.')
[ERROR  ] [unable to access to <C]\hiberfil.sys>
Traceback (most recent call last):
  File "C:\Users\dongf\kivy_venv\lib\site-packages\kivy\uix\filechooser.py", line 180, in is_hidden
    return GetFileAttributesExW(fn)[0] & FILE_ATTRIBUTE_HIDDEN
pywintypes.error: (32, 'GetFileAttributesEx', 'The process cannot access the file because it is being used by another process.')
[ERROR  ] [unable to access to <C]\pagefile.sys>
Traceback (most recent call last):
  File "C:\Users\dongf\kivy_venv\lib\site-packages\kivy\uix\filechooser.py", line 180, in is_hidden
    return GetFileAttributesExW(fn)[0] & FILE_ATTRIBUTE_HIDDEN
pywintypes.error: (32, 'GetFileAttributesEx', 'The process cannot access the file because it is being used by another process.')
[ERROR  ] [unable to access to <C]\swapfile.sys>
Traceback (most recent call last):
  File "C:\Users\dongf\kivy_venv\lib\site-packages\kivy\uix\filechooser.py", line 180, in is_hidden
    return GetFileAttributesExW(fn)[0] & FILE_ATTRIBUTE_HIDDEN
pywintypes.error: (32, 'GetFileAttributesEx', 'The process cannot access the file because it is being used by another process.')