UnicodeDecodeError:“utf-8”编解码器在0位置无法解码字节0xff:无效的开始字节

I am trying to scrap a picture from the link and put it into a image file. The request response is returning a byte stream. So I am using decode('utf-8') to convert to unicode stream however, I am facing the following error:I am trying to scrap a picture from the link an