Scrollbar In Python Tkinter Toplevel() Shows Up But Does Not Scroll

I have looked through all the answered questions available here but to no avail. I'm working on Mac OS X High Sierra and my Scrollbar widget shows up but doesn't scroll the window,

Solution 1:

There is nothing inside scrollFrame.

The labels are packed in popup, not in scrollCanvas

The scrollCanvas.config(scrollregion=scrollCanvas.bbox('all')) doesn't seem to do the job, not clear as to why.

Here is an example that works for Python 3.6.5 on windows 10:

from tkinter import *

root = Tk()
root.geometry('200x200')
root.resizable(False, False) 

vertScrollbar = Scrollbar(root, orient='vertical')
vertScrollbar.pack(side='right', fill='y')

scrollCanvas = Canvas(root, width='400', height='500',
                      scrollregion=(0, 0, 400, 500),
                      yscrollcommand=vertScrollbar.set)

vertScrollbar.config(command=scrollCanvas.yview)

scrollCanvas.pack(side='top', fill='both')

img = PhotoImage(file='test.gif')
scrollCanvas.create_image(2, 2, anchor='nw', image = img)

root.mainloop()