Joint Intent notebook error
Hello everybody, I trying to run 'Joint_Intent_and_Slot_Classification.ipynb' and looks okay until the train part, when starts the evaluation part, return this error.

![MicrosoftTeams-image (4)](https://user-images.githubusercontent.com/47003942/133801257-44c743fc-e91a-4d7f-b856-08a1c9d3f070.png)
![MicrosoftTeams-image (3)](https://user-images.githubusercontent.com/47003942/133801198-c6d4c462-26f1-482a-8e43-1ad77af61207.png)

This script is on 'r1.3.0' version, and everything is okay when I run on 'r1.2.0'. I just run the original script in both cases. Could be a bug? Am I doing something wrong?