ngrok tunnel not working with this code on Google Cloud Console

[jenniferbarnettdavis]

I am trying to work through the tutorial here: https://cloud.google.com/solutions/building-chatbot-agent-dialogflow, which pulls the code in this git into a datalab VM of Google Cloud Platform.

I have installed ngrok and seem to have it running, but Dialogflow returns an error: Webhook call failed. Error: PERMISSION_DENIED. (When I try to test my chatbot with the webhook enabled, I get a permission denied error that reads as a permanent redirect in the notebook file.)

The tutorial didn't work straight "out of the box" and I am not experienced enough to pinpoint the problem.

This is a screenshot of what it shows. ngrok.ipynb 308 PERMANENT REDIRECT image

I have tried adjusting the VM's firewall settings and using different forms of the URL when calling ngrok. !./ngrok http 5000 I have tried using the external IP of the VM, the long URL of the datalab instance, and a variety of other hairbrained notions. Nothing seems to resolve.

Any help pointing me towards a resolution is appreciated.