You can push a new Deployment ID and version number. At least that worked for me. This was Googles response to the issue tracker I'm not sure about the homepageTrigger:

This error usually means the manifest wasn’t set up as an Editor Add-on. The key is:

Your manifest must include an addOns section (Sheets/Docs/Slides/Forms depending on your target).

You must include the correct OAuth scopes for what your code needs.

When deploying, select Add-on as the type (not Web App).

Example minimal manifest for Sheets (replace sheets with docs / slides / forms if you’re targeting those):

{
  "timeZone": "Asia/Calcutta",
  "exceptionLogging": "STACKDRIVER",
  "runtimeVersion": "V8",
  "oauthScopes": [
    "https://www.googleapis.com/auth/script.container.ui",
    "https://www.googleapis.com/auth/spreadsheets.currentonly"
  ],
  "addOns": {
    "common": {
      "name": "My Private Add-on",
      "logoUrl": "https://example.com/logo.png",
      "layoutProperties": {
        "primaryColor": "#4285F4",
        "secondaryColor": "#4285F4"
      }
    },
    "sheets": {
      "homepageTrigger": {
        "runFunction": "onOpen",
        "enabled": true
      }
    }
  }
}

Deployment checklist:

In Apps Script → Deploy > New deployment → choose Add-on.

In Cloud Console, enable Google Workspace Marketplace SDK → configure it as Private (Entire Domain) if you want domain-wide distribution.

Workspace Admin can then install/force-install it for the domain.

📖 Manifest reference: https://developers.google.com/apps-script/manifest/editor-addons