Octant didn't open from Google Compute Engine "GCE"

From ubuntu 20.10

I installed Kubernetes, octant, and VM on the google compute engine

but, I can’t open octant from the GCE.

But, I can open octant locally on Ubuntu VM

Hi,

how is it related to Rasa?

I enrolled in the “Rasa Advanced Deployment Workshop”. and this is from the workshop But, I can’t open octant from the google compute engine