winerror 2 the system cannot find the file specified subprocess.call code example

Example: python wifi moudel [WinError 2] The system cannot find the file specified

#Here it is
from wifi import Cell, Scheme
Cell.all('wlan0')
cell = Cell.all('wlan0')[0]
scheme = Scheme.for_cell('wlan0', 'home', cell, passkey)
scheme.save()
scheme.activate()

scheme = Scheme.find('wlan0', 'home')
scheme.activate()