I cannot create a new entity from the course Im taking

[Cris AD]

In my learning website, Im doing the course 

Virtual Agent Simulator

so, Im in this step:

Create a simple entity for internet

• Create a new simple entity named internet
• In an utterance, select a given word that you want to define as a simple entity

But when Im trying to add the new simple wntity and click on save button, is doing anything... is not saved and the record is not created

Also, the Associated entities record is not created as it was supposed to be

and also there is appearing this message in the home page of the instance (the instnce was temporary instance provided ny the sericenow course training)

Please help, how can I fix this in order to pass this steps to contunue with the course...

Thanks and Regards

[BCELSTEI]

Hello

You have to modify the columns (menu "Tables and Columns") value in the "NLU Entity" table as the picture below