Qt: Session management error: Could not open network socket

I looked at a similar post and could not resolve it.  I am getting the error message when using imshow().  The simple code is below:

import cv2 as cv
import numpy as np

pic = cv.imread('WP_20130915_006.jpg')
cv.imshow("help",pic )
 

The error message is:

Qt: Session management error: Could not open network socket

The environment is Linux Mint running PyCharm Professional 2024.1.5 and Python 3.11

Thanks in advance for any help.

James