fix crop color error

        tempfile.gettempdir(), sha256, angle, scale, top, right, bottom, left

    )

    if not os.path.isfile(tmp_pic_path):

        crop_color = [96, 96, 96]

        crop_color = [96]

        img = pyvips.Image.new_from_file(pic_file.local_path())

        if angle:

            img = img.rotate(angle)