Hello again! Sorry for slight delay. Was discussing with our wider team to figure out what to do here.
Looking at the codelab you linked to it seems to be using hub.kerasLayer which we do not support currently.
The team asked me if you could open a new issue using the following link to help us to track this:
  
      

      github.com
  

  
    

Build software better, together 3

  rflow/tfjs/issues/new/choose

  GitHub is where people build software. More than 65 million people use GitHub to discover, fork, and contribute to over 200 million projects.

  

  
    
    
  

  


Depending what you are trying to do precisely here you may find my other learning paths on text classification for TFJS useful here:
Path 1: Get started with comment-spam detection  |  Google Developers 5
Path 2:  Go further with comment spam detection  |  Google Developers 4
Thank you.