{“message”: “missing project_id in redirect_uri”}

Third party integrations
1

I followed instruction in Google Assistant component page https://www.home-assistant.io/components/google_assistant/

In my android smartphone… go in Google Home > Setting > Home control > Add device and click in [test] my test app … it show me a blank page with the following message:

{“message”: “missing project_id in redirect_uri”}

Can anyone help me?

I have Home Assistant Hassio 0.79.3
I created a ddns with Duckdns and NGINX… which works fine

2

Problem myself solved
Google Assistant component instruction are incomplete…
After created settings in Action on Google you have to click on BUILD > Actions… then Home Assistant and put the following url: https://[YOUR HOME ASSISTANT URL:PORT]/api/google_assistant

Then go to Google Home in your smartphone > Settings > Home Control > Add (+)
You wll find a new item [test] Service Name

The “Service name” is the name you gved it in Quick Setup or Invocation section of Action on Google.