AWS S3 Lambda Python脚本函数执行时报错AttributeError: module ‘PIL‘ has no attribute ‘，Image‘cannot import nam

import PIL
def add_image(self, tag, img, step):
    summary = Summary()
    bio = BytesIO()
 
    if type(img) == str:
        img = PIL.Image.open(img)
    elif type(img) == PIL.Image.Image:
        pass
    else:
        img = scipy.misc.toimage(img)

AttributeError: module ‘PIL‘ has no attribute ‘，Image‘cannot import name '_imaging' from 'PIL'