TkinterWeb: The website window is not opening

Hi ,

I am using python 3.8 . the below code i am using , the site is not loading

from tkinter import * 
from tkinterweb import HtmlFrame 

root = Tk() 
frame = HtmlFrame(root) 
frame.load_website("https://www.dummies.com/web-design-development/site-development/a-sample-web-page-in-html/") 
frame.pack(fill="both", expand=True) 
root.mainloop()

I got message like

UserNotification: Fetching Tkhtml3 for 64-bit Windows with Python 3.8.7.   
Tkhtml found in C:\Users\User0\python\Python38\Lib\site-packages\tkinterweb\tkhtml\Windows\64-bit.

after that the script execution stopped and no window is opening. is there any thing wrong that i am doing.

Thanks Swagat