AWS Instance Websocket Stream Error connecting to omniverse://localhost/Isaac

I am trying to start the WebSocket live stream using the recommended start in the documentation:

./isaac-sim.headless.websocket.sh --allow-root

found here: Advanced Installation

But I keep getting this error regardless of what EC2 instance I run this on:

All the steps in the Advanced setup were followed, is there any reason why I’m getting this error?

Thanks,
Trent