python 3.7 kivy libpng16-16.png Error on windows8

Environment

• pipenv
• python 3.7
• kivy.deps.sdl2 0.1.18

When I installed kivy through official pip instruction in my windows 8, error happened.
https://kivy.org/docs/installation/installation-windows.html

The procedure entry point inflateValidate could not be located in the dynamic link library C:\Program Files\GIMP2\bin\libpng16-16.dll.

It depends on kivy.deps.sdl2 packages. I tried to change that dll. It worked.

Download link:
www.dllme.com

If does'n work, please commented.