<class 'FileNotFoundError'> Error.

[hiewliwen]

1. New venv, activated and installed requirements.
2. Ran python main.py in cmd prompt.
3. Window generated with error. See image here.
4. Below is the traceback.

What seems to be the problem here?

<class 'FileNotFoundError'>
(2, 'The system cannot find the file specified', None, 2, None)
You can report this using report bug button
File "main.py", line 7, in
NNSandboxApp().run()
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\site-packages\kivy\app.py", line 855, in run
runTouchApp()
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\site-packages\kivy\base.py", line 504, in runTouchApp
EventLoop.window.mainloop()
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\site-packages\kivy\core\window\window_sdl2.py", line 747, in mainloop
self._mainloop()
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\site-packages\kivy\core\window\window_sdl2.py", line 479, in _mainloop
EventLoop.idle()
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\site-packages\kivy\base.py", line 339, in idle
Clock.tick()
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\site-packages\kivy\clock.py", line 591, in tick
self._process_events()
File "kivy_clock.pyx", line 384, in kivy._clock.CyClockBase._process_events
File "kivy_clock.pyx", line 414, in kivy._clock.CyClockBase._process_events
File "kivy_clock.pyx", line 412, in kivy._clock.CyClockBase._process_events
File "kivy_clock.pyx", line 167, in kivy._clock.ClockEvent.tick
File "C:\Users\SLATE17\Downloads\Neural-Network-Sandbox-master\Frontend\MainApp.py", line 51, in default_drawing
self.drawer.draw(layers=[1,1],weighted=False)
File "C:\Users\SLATE17\Downloads\Neural-Network-Sandbox-master\Frontend\Drawing.py", line 61, in draw
check_call(['dot','-Tpng','network_graph.txt','-o','Network_Drawing.png']) #Converts .txt -> .png
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\subprocess.py", line 358, in check_call
retcode = call(*popenargs, **kwargs)
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\subprocess.py", line 339, in call
with Popen(*popenargs, **kwargs) as p:
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\subprocess.py", line 800, in init
restore_signals, start_new_session)
File "C:\Users\SLATE17.conda\envs\tensorflow\lib\subprocess.py", line 1207, in _execute_child
startupinfo)

[imdeep2905]

The issue is with graphviz.
Make Sure you have graphviz installed and set in environment variables.
For Ex:
C:\Program Files (x86)\Graphviz2.38\bin
Get Graphviz For windows