QCustomSlider error "TypeError: 'module' object is not callable"

[NeuroDebug]

i am getting error "Traceback (most recent call last):
File "c:\Software\HMS GUI\main.py", line 25, in
main()
File "c:\Software\HMS GUI\main.py", line 20, in main
window = MainWindow()
File "c:\Software\HMS GUI\main.py", line 12, in init
self.ui.setupUi(self)
File "c:\Software\HMS GUI\ui_interface.py", line 141, in setupUi
self.Side_Menu = QCustomSlideMenu(self.frame_2)
TypeError: 'module' object is not callable".