OpenCV - read image and fail

---

• File does not exist
• File is not in the correct format.

cv2.error: OpenCV(4.5.3) /tmp/pip-req-build-agffqapq/opencv/modules/highgui/src/window.cpp:1006: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'imshow'