equired argument 'ranges' (pos 2) not found in cv2.warpAffine

equired argument 'ranges' (pos 2) not found in cv2.warpAffine

I'm trying to use the transformation function cv2.warpAffine and pretty much copying how it was done in the documentation (<a href="https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_imgproc/py_geometric_transformations/py_geometric_transformations.html?highlight=warpaffine" target="_blank">https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_imgproc/py_geometric_transformations/py_geometric_transformations.html?highlight=warpaffine</a>)

I'm trying to use the transformation function cv2.warpAffine and pretty much copying how it was done in the documentation (https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_imgproc/py_geometric_transformations/py_geometric_transformations.html?highlight=warpaffine)

Documentation:

M = np.float32([[1,0,100],[0,1,50]])
dst = cv2.warpAffine(img,M,(cols,rows))

Mine:

M=np.float32([[1, 0, shiftx], [0, 1, shifty]])
dst=cv2.warpAffine(cv2.UMat(img), M, (cols, rows))

However when I try to run this I receive the error "TypeError: Required argument 'ranges' (pos 2) not found". I don't understand what this is referring to and how to correct it.

python opencv

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