convert pb to uff

[250zhanghu]

I am try to inference a image classfication model on Jetson xavier.
Environment: tensorflow1.15 tensorrt7 python3.6
After training, I convert ckpt files to a pb files. And I can use this pb files to predict images successfully. Does it mean I freeze the model successfully?
When I try to convert pb to uff, i have lots of problems.
I wonder can this code can work on my problem or not, can you give me some advice?