我在香橙派上跑这个

https://gitee.com/ascend/samples/tree/master/python/contrib/cartoonGAN_picture#https://gitee.com/ascend/ModelZoo-TensorFlow/tree/master/TensorFlow/contrib/cv/cartoonization/ATC_cartoonization_tf_AE

cartoonGAN图片版本样例时出现了下面的错误是什么原因

ERROR] Execute model failed for acl.mdl.execute error, ret = 507011 

[INFO]  in inference, use time:0.005163431167602539 

Traceback (most recent call last): 

  File "/home/HwHiAiUser/phl_code/samples-master/python/contrib/cartoonGAN_picture/src/cartoonization.py", line 114, in <module> 

    main() 

  File "/home/HwHiAiUser/phl_code/samples-master/python/contrib/cartoonGAN_picture/src/cartoonization.py", line 111, in main 

    cartoonization.post_process(result, image_file, image) 

  File "/home/HwHiAiUser/phl_code/samples-master/python/contrib/cartoonGAN_picture/src/../../../common/acllite/acllite_utils.py", line 255, in wrapper 

    res = func(*args, **kwargs) 

  File "/home/HwHiAiUser/phl_code/samples-master/python/contrib/cartoonGAN_picture/src/cartoonization.py", line 65, in post_process 

    data = ((np.squeeze(infer_output[0]) + 1) * 127.5) 

TypeError: 'NoneType' object is not subscriptable