I have been getting this error: Unable to find any valuable Window provider. With kivy heres the \"full\" error:
[INFO ] [Logger ] Record log in C:\\U
I had the same problem. I tried many suggested solutions in vain. It only worked when I uninstalled and reinstalled kivy.
To uninstall:
$ pip uninstall kivy
To install:
$ python -m pip install kivy==2.0.0rc1