TypeError: float() argument must be a string or a number

[Molverin00]

I managed to follow the installation guide but i had this error that makes the window crash right after launch
I am using the Raspbian x86 OS to test this program.

Any hint or help will be appreciated.
Thank you in advance

[INFO ] [Logger ] Record log in /home/pi/.kivy/logs/kivy_18-07-31_3.txt
[INFO ] [Kivy ] v1.11.0.dev0, git-5bb2c13, 20180730
[INFO ] [Python ] v2.7.13 (default, Nov 24 2017, 17:33:09)
[GCC 6.3.0 20170516]
[INFO ] [Factory ] 195 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: pil(['text_sdl2'] ignored)
[INFO ] [Window ] Provider: sdl2(['window_egl_rpi'] ignored)
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] Backend used
[INFO ] [GL ] OpenGL version <3.0 Mesa 13.0.6>
[INFO ] [GL ] OpenGL vendor <VMware, Inc.>
[INFO ] [GL ] OpenGL renderer <Gallium 0.4 on llvmpipe (LLVM 3.9, 256 bits)>
[INFO ] [GL ] OpenGL parsed version: 3, 0
[INFO ] [GL ] Shading version <1.30>
[INFO ] [GL ] Texture max size <8192>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[INFO ] [GL ] NPOT texture support is available
Traceback (most recent call last):
File "main.py", line 2079, in
MainApp().run()
File "/usr/local/lib/python2.7/dist-packages/kivy/app.py", line 799, in run
self.load_kv(filename=self.kv_file)
File "/usr/local/lib/python2.7/dist-packages/kivy/app.py", line 596, in load_kv
root = Builder.load_file(rfilename)
File "/usr/local/lib/python2.7/dist-packages/kivy/lang/builder.py", line 301, in load_file
return self.load_string(data, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/kivy/lang/builder.py", line 368, in load_string
parser = Parser(content=string, filename=fn)
File "/usr/local/lib/python2.7/dist-packages/kivy/lang/parser.py", line 392, in init
self.parse(content)
File "/usr/local/lib/python2.7/dist-packages/kivy/lang/parser.py", line 498, in parse
self.execute_directives()
File "/usr/local/lib/python2.7/dist-packages/kivy/lang/parser.py", line 462, in execute_directives
mod = import(package)
File "/home/pi/CoPilot/kivymd/tabs.py", line 98, in
class MDTabHeader(MDFlatButton):
File "/home/pi/CoPilot/kivymd/tabs.py", line 101, in MDTabHeader
width = BoundedNumericProperty(dp(None), min=dp(72), max=dp(264), errorhandler=lambda x: dp(72))
File "/usr/local/lib/python2.7/dist-packages/kivy/metrics.py", line 136, in dp
return dpi2px(value, 'dp')
File "kivy/properties.pyx", line 291, in kivy.properties.dpi2px
File "kivy/properties.pyx", line 299, in kivy.properties.dpi2px
TypeError: float() argument must be a string or a number

[chaoman]

This issue can be fixed by changing the /kivymd/tab.py file from dp(None) to dp(0) in #6