Error Debugging Pycharm

Hi I read an image and used ORB Detector. my codes are:
import numpy as np
import cv2
from matplotlib import pyplot as plt
img = cv2.imread(‘ml.png’, 0)
orb = cv2.ORB()

find the keypoints with ORB

kp = orb.detect(img, None)

compute the descriptors with ORB

kp, des = orb.compute(img, kp)

draw only keypoints location,not size and orientation

img2 = cv2.drawKeypoints(img, kp, color=(0, 255, 0), flags=0)

Pycharm 2020 has stopped working and goes to Visual studio for debugging and messages appear:
an unhandled win32 exception occurred in python.exe (6344)

unhandled exception at 0x000007FEDEC488AA (cv2.cp38-win_amd64.pyd) in python.exe:0xC0000005: access violation reading location 0x0000000000000000 ’

Symbol loading for cv2.cp38-win_amd64.pyd was skipped because it is not specified in the included modules list’
Please Help me