cv2.error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\imgproc\src\resize.cpp:4045: error: (-215:Assertion failed) !ssize.empty() in function 'cv::resize' code example
Example: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'
This error happened because the image didn't load properly.
So you have problem with the previous line cv2.imread my suggestion is :
check if the images exist in the path you give
check the count variable if he have valid number