cv2.error: /io/opencv/modules/imgproc/src/imgwarp.cpp:3483: error: (-215) ssize.width > 0 && ssize.height > 0 in function resize

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Answer is in your question width and height must be > 0

this question must have been answered 5000 times before, here or on SO -- it's always the same:

python noob too silly to check if actual input is **valid**, then receiving a weird error in the next line.

@Ganesh, -- basically it is murphy's law

(and the downvote is for: you have no clue, what you're doing, and blindlycopypasting code from the internet won't get you anywhere)