How should I resize my image

error Traceback (most recent call last) in () 6 original=cv2.imread('/content/gdrive/MyDrive/background_removal_DL/test_data/videos/input_frames/input'+str(i)+'.png') 7 #subimage ----> 8 subimage=cv2.subtract(u2netresult,original) 9 cv2.imwrite('/content/gdrive/MyDrive/background_removal_DL/test_data/videos/output_frames/output'+str(i)+'.png',subimage) 10 error: OpenCV(4.8.0) /io/opencv/modules/core/src/arithm.cpp:647: error: (-209:Sizes of input arguments do not match) The operation is neither 'array op array' (where arrays have the same size and the same number of channels), nor 'array op scalar', nor 'scalar op array' in function 'arithm_op'