Can't create Google Workspace Marketplace SDK alternate runtimes deployment for Google meet

[EMIQ]

I'm trying to create a Google Meet add-on by following the instructions here

http://developers.google.com/meet/add-ons/guides/build-add-on When I build the manifest /

deployment file using their tool and try to add it in the API / service details screen I get

There was an error creating the deployment: the provided deployment is invalid

Here's my file (URL's changed but I know the real ones exist)

{
  "addOns": {
    "common": {
      "name": "EMIQ",
      "logoUrl": "https://app.myapp.com/logo.png"
    },
    "meet": {
      "web": {
        "sidePanelUri": "https://app.myapp.com/login",
        "supportsScreenSharing": false,
        "logoUrl": "https://app.myapp.com/logo.png",
        "addOnOrigins": ["https://app.myapp.com"]
      }
    }
  }
}

What can I do to chase this down?